| Rank | Average Family Size ▼ | School District / Population |
| 1. | 4.42 | Cicero School District 99 / 80,550 |
| 2. | 4.37 | Ford Heights School District 169 / 3,215 |
| 3. | 4.36 | General George Patton School District 133 / 2,655 |
| 4. | 4.20 | Harvey School District 152 / 18,214 |
| 5. | 4.11 | Aurora East Unit School District 131 / 71,917 |
| 6. | 4.07 | J. Sterling Morton High School District 201 / 147,548 |
| 7. | 4.06 | West Harvey-Dixmoor Public School District 147 / 12,046 |
| 8. | 4.05 | Bellwood School District 88 / 22,689 |
| 9. | 3.99 | Chicago Heights School District 170 / 25,323 |
| 10. | 3.99 | Maywood-Melrose Park-Broadview School District 89 / 42,778 |
| 11. | 3.97 | Round Lake Community Unit School District 116 / 39,118 |
| 12. | 3.96 | Central Stickney School District 110 / 2,463 |
| 13. | 3.94 | Waukegan Community Unit School District 60 / 86,907 |
| 14. | 3.91 | North Chicago School District 187 / 31,499 |
| 15. | 3.88 | Lincoln Elementary School District 156 / 7,763 |
| 16. | 3.85 | Posen-Robbins Elementary School District 143-5 / 11,587 |
| 17. | 3.85 | Joliet Public School District 86 / 98,824 |
| 18. | 3.85 | Mundelein Elementary School District 75 / 16,973 |
| 19. | 3.85 | Mannheim School District 83 / 21,032 |
| 20. | 3.85 | Reavis Township High School District 220 / 30,936 |
| 21. | 3.84 | Burbank School District 111 / 28,473 |
| 22. | 3.83 | South Holland School District 151 / 12,905 |
| 23. | 3.81 | Community Consolidated School District 168 / 10,033 |
| 24. | 3.81 | Zion Elementary School District 6 / 18,093 |
| 25. | 3.81 | Summit School District 104 / 11,456 |
| 26. | 3.81 | Rhodes School District 84-5 / 4,735 |
| 27. | 3.81 | Plainfield School District 202 / 100,005 |
| 28. | 3.80 | Berwyn South School District 100 / 29,048 |
| 29. | 3.79 | Valley View Community Unit School District 365U / 92,443 |
| 30. | 3.79 | Berwyn North School District 98 / 21,005 |
| 31. | 3.76 | Berkeley School District 87 / 20,746 |
| 32. | 3.76 | Arthur Community Unit School District 305 / 5,131 |
| 33. | 3.74 | Taft School District 90 / 4,902 |
| 34. | 3.73 | Buncombe Consolidated School District 43 / 570 |
| 35. | 3.72 | Franklin Park School District 84 / 10,543 |
| 36. | 3.71 | Union School District 81 / 1,632 |
| 37. | 3.70 | Joliet Township High School District 204 / 141,507 |
| 38. | 3.70 | Millburn Community Consolidated School District 24 / 8,866 |
| 39. | 3.69 | North Boone Community Unit School District 200 / 9,455 |
| 40. | 3.69 | Bloom Township High School District 206 / 65,205 |
| 41. | 3.69 | Summit Hill School District 161 / 21,129 |
| 42. | 3.69 | West Chicago School District 33 / 30,628 |
| 43. | 3.69 | Diamond Lake School District 76 / 8,500 |
| 44. | 3.69 | Proviso Township High School District 209 / 123,355 |
| 45. | 3.68 | Skokie School District 73-5 / 10,593 |
| 46. | 3.68 | Mazon-Verona-Kinsman Elementary School District 2C / 3,074 |
| 47. | 3.68 | Kenilworth School District 38 / 2,887 |
| 48. | 3.68 | Calumet City School District 155 / 10,849 |
| 49. | 3.68 | Thornton Township High School District 205 / 118,770 |
| 50. | 3.67 | Leyden Community High School District 212 / 61,917 |
| 51. | 3.66 | Midlothian School District 143 / 13,979 |
| 52. | 3.66 | Will County School District 92 / 15,428 |
| 53. | 3.66 | Cary Community Consolidated School District 26 / 23,250 |
| 54. | 3.65 | Hazel Crest School District 152-5 / 8,289 |
| 55. | 3.65 | Braceville School District 75 / 1,462 |
| 56. | 3.64 | Oswego Community Unit School District 308 / 55,989 |
| 57. | 3.63 | Homer Community Consolidated School District 33C / 26,946 |
| 58. | 3.63 | Belvidere Consolidated Unit School District 100 / 42,743 |
| 59. | 3.63 | School District U-46 / 220,636 |
| 60. | 3.63 | Mokena School District 159 / 17,361 |
| 61. | 3.63 | Sunnybrook School District 171 / 10,267 |
| 62. | 3.62 | Dolton School District 148 / 23,356 |
| 63. | 3.62 | Channahon School District 17 / 13,609 |
| 64. | 3.61 | Chicago Public School District 299 / 2,824,076 |
| 65. | 3.61 | Schiller Park School District 81 / 12,479 |
| 66. | 3.61 | Central Community Unit School District 301 / 16,974 |
| 67. | 3.60 | Mundelein Consolidated High School District 120 / 39,864 |
| 68. | 3.60 | Rondout School District 72 / 1,808 |
| 69. | 3.59 | New Lenox School District 122 / 35,731 |
| 70. | 3.59 | Minooka Community High School District 111 / 35,045 |
| 71. | 3.59 | Aurora West Unit School District 129 / 78,322 |
| 72. | 3.59 | Zion-Benton Township High School District 126 / 45,405 |
| 73. | 3.58 | Wood Dale School District 7 / 10,582 |
| 74. | 3.58 | Eswood Community Consolidated District 269 / 945 |
| 75. | 3.58 | Lincoln Way Community High School District 210 / 99,403 |
| 76. | 3.57 | Hinsdale Community Consolidated School District 181 / 26,716 |
| 77. | 3.57 | Fox River Grove Consolidated School District 3 / 4,841 |
| 78. | 3.56 | Creston Community Consolidated School District 161 / 1,253 |
| 79. | 3.56 | Community High School District 94 / 41,726 |
| 80. | 3.56 | Atwood Heights School District 125 / 7,231 |
| 81. | 3.56 | Community Unit School District 300 / 113,766 |
| 82. | 3.56 | Queen Bee School District 16 / 17,298 |
| 83. | 3.55 | Prairie-Hills Elementary School District 144 / 21,545 |
| 84. | 3.55 | Kinnikinnick Community Consolidated School District 131 / 12,043 |
| 85. | 3.55 | Laraway Community Consolidated School District 70C / 3,367 |
| 86. | 3.55 | Reed Custer Community Unit School District 255U / 10,368 |
| 87. | 3.54 | Cook County School District 130 / 29,069 |
| 88. | 3.54 | Addison School District 4 / 37,455 |
| 89. | 3.54 | Grayslake Consolidated Community School District 46 / 30,783 |
| 90. | 3.53 | Argo Community High School District 217 / 38,541 |
| 91. | 3.53 | Woodland Community Consolidated School District 50 / 49,686 |
| 92. | 3.53 | Roselle School District 12 / 7,990 |
| 93. | 3.53 | Winnetka School District 36 / 12,080 |
| 94. | 3.53 | Community High School District 155 / 96,663 |
| 95. | 3.52 | Grant Park Community Unit School District 6 / 3,539 |
| 96. | 3.52 | Beach Park Community Consolidated School District 3 / 20,454 |
| 97. | 3.51 | Bremen Community High School District 228 / 94,111 |
| 98. | 3.51 | Evergreen Park Community High School District 231 / 19,356 |
| 98. | 3.51 | Evergreen Park Elementary School District 124 / 19,356 |
| 100. | 3.51 | Kaneland Community Unit School District 302 / 23,164 |
| 101. | 3.51 | Ridgeland School District 122 / 20,640 |
| 102. | 3.51 | Brownstown Community Unit School District 201 / 2,571 |
| 103. | 3.51 | Lockport Township High School District 205 / 75,447 |
| 104. | 3.50 | Lisbon Community Consolidated School District 90 / 856 |
| 105. | 3.50 | Troy Community Consolidated School District 30C / 35,403 |
| 106. | 3.49 | Harvard Community Unit School District 50 / 14,503 |
| 107. | 3.49 | Calumet Public School District 132 / 11,816 |
| 108. | 3.49 | Crystal Lake Community Consolidated School District 47 / 60,711 |
| 109. | 3.49 | Warren Township High School District 121 / 64,294 |
| 110. | 3.49 | Indian Prairie Community Unit School District 204 / 117,177 |
| 111. | 3.48 | Lake Zurich Community Unit School District 95 / 33,213 |
| 112. | 3.48 | Rochelle Community Consolidated District 231 / 13,617 |
| 113. | 3.48 | Grayslake Community High School District 127 / 44,353 |
| 114. | 3.47 | Yorkville Community Unit School District 115 / 22,716 |
| 115. | 3.47 | Hiawatha Community Unit School District 426 / 3,568 |
| 116. | 3.47 | Liberty Community Unit School District 2 / 3,461 |
| 117. | 3.47 | Winnebago Community Unit School District 323 / 9,072 |
| 118. | 3.47 | Byron Community Unit School District 226 / 7,851 |
| 119. | 3.47 | Gavin School District 37 / 6,456 |
| 120. | 3.47 | Indian Springs School District 109 / 23,303 |
| 121. | 3.46 | Oak Lawn Community High School District 229 / 37,054 |
| 122. | 3.46 | Community Consolidated School District 93 / 34,011 |
| 123. | 3.46 | East Prairie School District 73 / 4,515 |
| 124. | 3.46 | Lake Villa Community Consolidated School District 41 / 22,282 |
| 125. | 3.46 | Minooka Community Consolidated School District 201 / 16,323 |
| 126. | 3.46 | Thornton Fractional Township High School District 215 / 58,072 |
| 127. | 3.46 | Grant Community High School District 124 / 31,246 |
| 128. | 3.46 | Arcola Consolidated Unit School District 306 / 4,111 |
| 129. | 3.45 | Kankakee School District 111 / 32,737 |
| 130. | 3.45 | Western Springs School District 101 / 10,075 |
| 131. | 3.45 | South Beloit Community Unit School District 320 / 5,529 |
| 132. | 3.45 | Rochelle Township High School District 212 / 17,645 |
| 133. | 3.44 | Sandridge School District 172 / 4,190 |
| 134. | 3.44 | Chicago Ridge School District 127-5 / 12,301 |
| 135. | 3.44 | Arbor Park School District 145 / 13,038 |
| 136. | 3.44 | Meridian Community Unit School District 223 / 8,879 |
| 137. | 3.44 | St. Charles Community Unit School District 303 / 64,237 |
| 138. | 3.44 | Geneva Community Unit School District 304 / 27,729 |
| 139. | 3.44 | Manhattan School District 114 / 9,731 |
| 140. | 3.44 | River Forest School District 90 / 11,123 |
| 141. | 3.44 | Frankfort Community Consolidated School District 157C / 16,507 |
| 142. | 3.44 | Antioch Community Consolidated School District 34 / 21,954 |
| 143. | 3.43 | Plano Community Unit School District 88 / 10,371 |
| 144. | 3.43 | Golf Elementary School District 67 / 6,306 |
| 145. | 3.43 | LaGrange School District 102 / 24,056 |
| 146. | 3.43 | Antioch Community High School District 117 / 43,663 |
| 147. | 3.43 | Rockdale School District 84 / 2,338 |
| 148. | 3.42 | Benjamin School District 25 / 6,460 |
| 149. | 3.42 | Lee Center Community Unit School District 271 / 1,778 |
| 150. | 3.42 | South Holland School District 150 / 9,685 |
| 151. | 3.41 | Batavia Unit School District 101 / 31,942 |
| 152. | 3.41 | Lockport School District 91 / 8,520 |
| 153. | 3.41 | Big Hollow School District 38 / 10,415 |
| 154. | 3.41 | Marquardt School District 15 / 24,872 |
| 155. | 3.41 | Dieterich Community Unit School District 30 / 2,262 |
| 156. | 3.41 | Oak Lawn-Hometown School District 123 / 32,880 |
| 157. | 3.41 | Wilmette School District 39 / 26,023 |
| 158. | 3.41 | Kildeer Countryside Community Consolidated School District 96 / 24,304 |
| 159. | 3.41 | Keeneyville School District 20 / 14,672 |
| 160. | 3.40 | Shirland Community Consolidated School District 134 / 1,893 |
| 161. | 3.40 | Lyons School District 103 / 21,047 |
| 162. | 3.40 | Wauconda Community Unit School District 118 / 25,107 |
| 163. | 3.40 | Bond County Community Unit School District 2 / 14,175 |
| 164. | 3.40 | Dunlap Community Unit School District 323 / 16,552 |
| 165. | 3.40 | Lincolnwood School District 74 / 11,782 |
| 166. | 3.40 | New Trier Township High School District 203 / 59,667 |
| 167. | 3.40 | Prairie Grove Community School District 46 / 7,861 |
| 168. | 3.40 | Fenton Community High School District 100 / 31,126 |
| 169. | 3.39 | St. George Community Consolidated School District 258 / 2,880 |
| 170. | 3.39 | Allendale Community Consolidated School District 17 / 1,209 |
| 171. | 3.39 | Libertyville School District 70 / 19,984 |
| 172. | 3.39 | McHenry Community Consolidated School District 15 / 42,838 |
| 173. | 3.39 | East St. Louis School District 189 / 44,780 |
| 174. | 3.39 | Community High School District 218 / 117,651 |
| 175. | 3.38 | Woodstock Community Unit School District 200 / 36,015 |
| 176. | 3.38 | McHenry Community High School District 156 / 45,771 |
| 177. | 3.38 | Flossmoor School District 161 / 20,487 |
| 178. | 3.38 | Niles Township Community High School District 219 / 94,511 |
| 179. | 3.38 | Barrington Community Unit School District 220 / 44,741 |
| 180. | 3.37 | Lincolnshire-Prairieview School District 103 / 13,705 |
| 181. | 3.37 | North Palos School District 117 / 26,239 |
| 182. | 3.37 | Skokie School District 68 / 21,113 |
| 183. | 3.37 | Genoa-Kingston Community Unit School District 424 / 8,651 |
| 184. | 3.37 | Dolton School District 149 / 28,452 |
| 185. | 3.37 | Seneca Township High School District 160 / 7,399 |
| 186. | 3.36 | Elmhurst School District 205 / 48,567 |
| 187. | 3.36 | Gurnee School District 56 / 16,011 |
| 188. | 3.36 | Deerfield School District 109 / 22,670 |
| 189. | 3.36 | Country Club Hills School District 160 / 12,568 |
| 190. | 3.36 | Libertyville Community High School District 128 / 49,804 |
| 191. | 3.36 | Kirby School District 140 / 40,025 |
| 192. | 3.36 | Cahokia Community Unit School District 187 / 20,194 |
| 193. | 3.36 | Elmwood Park Community Unit School District 401 / 23,988 |
| 194. | 3.36 | Naperville Community Unit District 203 / 102,048 |
| 195. | 3.36 | DuPage High School District 88 / 82,390 |
| 196. | 3.36 | Skokie-Fairview School District 72 / 6,662 |
| 197. | 3.36 | Hononegah Community High School District 207 / 27,443 |
| 198. | 3.36 | Virginia Community Unit School District 64 / 2,417 |
| 199. | 3.36 | Glenbard Township High School District 87 / 161,734 |
| 200. | 3.36 | Glen Ellyn School District 41 / 29,260 |
| 201. | 3.35 | Princeville Community Unit School District 326 / 4,420 |
| 202. | 3.35 | Des Plaines Community Consolidated School District 62 / 49,282 |
| 203. | 3.35 | Opdyke-Belle Rive Community Consolidated School District 5 / 1,860 |
| 204. | 3.35 | Zeigler-Royalton Community Unit School District 188 / 3,939 |
| 205. | 3.35 | Name N/A / 4,722,093 |
| 206. | 3.35 | Matteson Elementary School District 162 / 23,227 |
| 207. | 3.35 | Forest Ridge School District 142 / 16,287 |
| 208. | 3.34 | Oak Grove School District 68 / 7,275 |
| 209. | 3.34 | Beecher Community Unit School District 200U / 5,431 |
| 210. | 3.34 | Prophetstown-Lyndon-Tampico Community Unit School District 3 / 5,966 |
| 211. | 3.34 | Hawthorn Community Consolidated School District 73 / 28,155 |
| 212. | 3.34 | Johnsburg Community Unit School District 12 / 13,505 |
| 213. | 3.34 | Wolf Branch School District 113 / 7,337 |
| 214. | 3.34 | Valmeyer Community Unit School District 3 / 2,642 |
| 215. | 3.34 | Mascoutah Community Unit School District 19 / 15,542 |
| 216. | 3.33 | Brookwood School District 167 / 9,977 |
| 217. | 3.33 | Venice Community Unit School District 3 / 1,134 |
| 218. | 3.33 | River Trails School District 26 / 15,778 |
| 219. | 3.33 | Lake Forest School District 67 / 20,797 |
| 220. | 3.33 | Adlai E. Stevenson High School District 125 / 63,081 |
| 221. | 3.33 | Teutopolis Community Unit School District 50 / 5,035 |
| 222. | 3.32 | Lyons Township High School District 204 / 66,137 |
| 223. | 3.32 | Harrison School District 36 / 3,597 |
| 224. | 3.32 | Riley Community Consolidated School District 18 / 3,142 |
| 225. | 3.32 | Morton Grove School District 70 / 8,293 |
| 226. | 3.32 | Schaumburg Community Consolidated School District 54 / 132,880 |
| 227. | 3.31 | Township High School District 211 / 234,105 |
| 228. | 3.31 | Chaney-Monge School District 88 / 5,813 |
| 229. | 3.31 | Orland School District 135 / 53,482 |
| 230. | 3.31 | Rockford School District 205 / 197,697 |
| 231. | 3.31 | Maine Township High School District 207 / 139,587 |
| 232. | 3.31 | Rosemont Elementary School District 78 / 1,857 |
| 233. | 3.31 | Burnham School District 154-5 / 1,265 |
| 234. | 3.31 | Lemont Township High School District 210 / 23,740 |
| 235. | 3.31 | Morris School District 54 / 12,836 |
| 236. | 3.31 | East Maine School District 63 / 45,166 |
| 237. | 3.31 | Newark Community High School District 18 / 3,368 |
| 238. | 3.31 | LaGrange School District 105 / 11,636 |
| 239. | 3.31 | Lemont-Bromberek Combined School District 113A / 23,543 |
| 240. | 3.31 | Glenview Community Consolidated School District 34 / 39,907 |
| 241. | 3.30 | Palatine Community Consolidated School District 15 / 117,755 |
| 242. | 3.30 | Huntley Consolidated School District 158 / 36,341 |
| 243. | 3.30 | El Paso-Gridley Community Unit School District 11 / 6,903 |
| 244. | 3.30 | Mendota Community Consolidated School District 289 / 10,404 |
| 245. | 3.30 | Hoover-Schrum Memorial School District 157 / 7,416 |
| 246. | 3.30 | Community Consolidated School District 59 / 63,662 |
| 247. | 3.30 | Bensenville School District 2 / 20,544 |
| 248. | 3.30 | Mendota Township High School District 280 / 10,414 |
| 249. | 3.30 | Coal City Community Unit School District 1 / 10,885 |
| 250. | 3.30 | Wheeling Community Consolidated School District 21 / 64,762 |
| 251. | 3.29 | Lombard School District 44 / 34,789 |
| 252. | 3.29 | Township High School District 113 / 61,582 |
| 253. | 3.29 | Chester Non-High School District 122 / 939 |
| 253. | 3.29 | Prairie du Rocher Community Consolidated School District 134 / 939 |
| 255. | 3.29 | Hillside School District 93 / 5,305 |
| 256. | 3.29 | Winthrop Harbor School District 1 / 6,905 |
| 257. | 3.29 | Lake Forest Community High School District 115 / 29,962 |
| 258. | 3.29 | Glencoe School District 35 / 8,771 |
| 259. | 3.29 | Bartonville School District 66 / 2,092 |
| 260. | 3.29 | Gardner-South Wilmington Township High School District / 3,994 |
| 261. | 3.29 | Steger School District 194 / 14,119 |
| 262. | 3.28 | Kansas Community Unit School District 3 / 1,788 |
| 263. | 3.28 | Rich Township High School District 227 / 64,486 |
| 264. | 3.28 | Alden-Hebron School District 19 / 3,069 |
| 265. | 3.28 | Lindop School District 92 / 4,139 |
| 266. | 3.28 | Park Ridge Consolidated Community School District 64 / 39,374 |
| 267. | 3.27 | Hinsdale Township High School District 86 / 77,530 |
| 268. | 3.27 | Community Unit School District 200 / 79,138 |
| 269. | 3.27 | Emmons School District 33 / 3,610 |
| 270. | 3.27 | Wood River-Hartford Elementary School District 15 / 7,179 |
| 271. | 3.27 | Consolidated High School District 230 / 155,984 |
| 272. | 3.27 | Bradley School District 61 / 11,682 |
| 273. | 3.27 | Arlington Heights School District 25 / 48,637 |
| 274. | 3.27 | Bluford Community Consolidated School District 114 / 3,118 |
| 275. | 3.27 | Grand Prairie Community Consolidated School District 6 / 941 |
| 276. | 3.27 | Seneca Community Consolidated School District 170 / 3,370 |
| 277. | 3.27 | Bradley-Bourbonnais Consolidated High School District 307 / 37,677 |
| 278. | 3.26 | Crete-Monee Community Unit School District 201-U / 36,316 |
| 279. | 3.26 | Morris Community High School District 101 / 18,602 |
| 280. | 3.26 | St. Rose School District 14-15 / 1,358 |
| 281. | 3.26 | Township High School District 214 / 245,678 |
| 282. | 3.26 | Wilmington Community Unit School District 209U / 10,990 |
| 283. | 3.26 | Homewood-Flossmoor Community High School District 233 / 36,480 |
| 284. | 3.26 | Marengo Community High School District 154 / 14,331 |
| 285. | 3.26 | Westmont Community Unit School District 201 / 13,713 |
| 286. | 3.26 | North Shore School District 112 / 36,884 |
| 287. | 3.26 | Rockridge Community Unit School District 300 / 7,388 |
| 288. | 3.26 | Richmond-Burton Community High School District 157 / 12,268 |
| 288. | 3.26 | Nippersink School District 2 / 12,268 |
| 290. | 3.26 | Waltonville Community Unit School District 1 / 2,140 |
| 291. | 3.26 | Lake Park Community High School District 108 / 51,742 |
| 292. | 3.26 | Forrestville Valley Community Unit School District 221 / 5,626 |
| 293. | 3.26 | Norwood Elementary School District 63 / 4,543 |
| 294. | 3.26 | Community Consolidated School District 146 / 28,647 |
| 295. | 3.25 | Villa Park School District 45 / 35,529 |
| 296. | 3.25 | Herscher Community Unit School District 2 / 10,597 |
| 297. | 3.25 | Elementary School District 159 / 17,247 |
| 298. | 3.25 | St. Elmo Community Unit School District 202 / 3,037 |
| 299. | 3.25 | Brookfield School District 95 / 10,669 |
| 300. | 3.25 | Sunset Ridge School District 29 / 4,088 |
| 301. | 3.25 | Deer Creek-Mackinaw Community Unit School District 701 / 5,346 |
| 302. | 3.25 | Skokie School District 69 / 17,977 |
| 303. | 3.25 | Harlem Unit School District 122 / 46,508 |
| 304. | 3.25 | Eureka Community Unit District 140 / 9,590 |
| 305. | 3.25 | Marengo-Union Elementary Consolidated District 165 / 11,189 |
| 306. | 3.24 | Bourbonnais School District 53 / 23,115 |
| 307. | 3.24 | Avoca School District 37 / 5,818 |
| 308. | 3.24 | Fremont School District 79 / 14,383 |
| 309. | 3.24 | Mulberry Grove Community Unit School District 1 / 2,614 |
| 310. | 3.24 | DeKalb Community Unit School District 428 / 52,712 |
| 311. | 3.23 | Thornton School District 154 / 2,590 |
| 312. | 3.23 | Sycamore Community Unit School District 427 / 20,999 |
| 313. | 3.23 | Mahomet-Seymour Community Unit School District 3 / 12,626 |
| 314. | 3.23 | Itasca School District 10 / 8,500 |
| 315. | 3.23 | Niles Elementary School District 71 / 7,270 |
| 316. | 3.23 | Alsip-Hazelgreen-Oaklawn School District 126 / 15,865 |
| 317. | 3.23 | Union Ridge School District 86 / 5,490 |
| 318. | 3.23 | Cypress School District 64 / 1,098 |
| 319. | 3.23 | Steward Elementary School District 220 / 801 |
| 320. | 3.23 | Altamont Community Unit School District 10 / 4,756 |
| 321. | 3.22 | Polo Community Unit School District 222 / 4,315 |
| 322. | 3.22 | St. Libory Consolidated School District 30 / 741 |
| 323. | 3.22 | Westchester School District 92-5 / 14,871 |
| 324. | 3.22 | Newark Community Consolidated School District 66 / 2,336 |
| 325. | 3.22 | Lake Bluff Elementary School District 65 / 8,927 |
| 326. | 3.22 | Prairie Hill Community Consolidated School District 133 / 3,506 |
| 327. | 3.22 | LaGrange Highlands School District 106 / 8,547 |
| 328. | 3.22 | Calhoun Community Unit School District 40 / 3,302 |
| 329. | 3.22 | Webber Township High School District 204 / 3,267 |
| 330. | 3.22 | Hoopeston Area Community Unit School District 11 / 7,556 |
| 331. | 3.21 | Community Consolidated School District 180 / 6,618 |
| 332. | 3.21 | Peotone Community Unit School District 207U / 10,965 |
| 333. | 3.21 | Evanston Township High School District 202 / 84,695 |
| 333. | 3.21 | Evanston Community Consolidated School District 65 / 84,695 |
| 335. | 3.21 | Fox Lake Grade School District 114 / 9,238 |
| 336. | 3.21 | Tremont Community Unit School District 702 / 5,196 |
| 337. | 3.21 | Elmwood Community Unit School District 322 / 3,595 |
| 338. | 3.21 | Manteno Community Unit School District 5 / 11,567 |
| 339. | 3.21 | Saratoga Community Consolidated School District 60C / 5,177 |
| 340. | 3.21 | Northbrook Elementary School District 27 / 11,603 |
| 341. | 3.21 | Momence Community Unit School District 1 / 7,531 |
| 342. | 3.21 | Indian Creek Community Unit District 425 / 4,778 |
| 343. | 3.21 | Pontiac-William Holliday School District 105 / 7,533 |
| 344. | 3.20 | O'Fallon Community Consolidated School District 90 / 26,098 |
| 345. | 3.20 | Potomac Community Unit School District 10 / 1,249 |
| 346. | 3.20 | Park Forest School District 163 / 16,095 |
| 347. | 3.20 | Northfield Township High School District 225 / 85,342 |
| 348. | 3.20 | Mount Prospect School District 57 / 19,671 |
| 349. | 3.20 | Butler School District 53 / 5,478 |
| 350. | 3.20 | Ridgewood Community High School District 234 / 18,237 |
| 351. | 3.20 | Norridge School District 80 / 12,435 |
| 352. | 3.20 | Georgetown-Ridge Farm Consolidated Unit School District 4 / 6,451 |
| 353. | 3.20 | Downers Grove Grade School District 58 / 53,011 |
| 354. | 3.19 | Effingham Community Unit School District 40 / 20,775 |
| 355. | 3.19 | Tri-Valley Community Unit School District 3 / 4,331 |
| 356. | 3.19 | Tamaroa School District 5 / 1,317 |
| 357. | 3.19 | Earlville Community Unit School District 9 / 2,812 |
| 358. | 3.19 | Riverside School District 96 / 12,776 |
| 359. | 3.19 | Oak Park and River Forest District 200 / 64,226 |
| 360. | 3.19 | Columbia Community Unit School District 4 / 11,646 |
| 361. | 3.18 | Darien School District 61 / 15,515 |
| 362. | 3.18 | Willow Springs School District 108 / 4,045 |
| 363. | 3.18 | Riverside Brookfield Township School District 208 / 27,463 |
| 364. | 3.18 | Dupo Community Unit School District 196 / 7,252 |
| 365. | 3.18 | O'Fallon Township High School District 203 / 36,794 |
| 366. | 3.18 | Rockton School District 140 / 10,001 |
| 367. | 3.18 | Cass School District 63 / 8,572 |
| 368. | 3.18 | Frankfort Community Unit School District 168 / 11,766 |
| 369. | 3.18 | Aptakisic-Tripp Community Consolidated School District / 18,707 |
| 370. | 3.18 | Lansing School District 158 / 21,795 |
| 371. | 3.18 | Pecatonica Community Unit School District 321 / 4,940 |
| 372. | 3.18 | Waltham Community Consolidated School District 185 / 2,393 |
| 373. | 3.18 | Sandwich Community Unit School District 430 / 14,659 |
| 374. | 3.17 | Pennoyer School District 79 / 4,852 |
| 375. | 3.17 | Cowden-Herrick Community Unit School District 3A / 2,282 |
| 376. | 3.17 | Depue Community Unit School District 103 / 2,173 |
| 377. | 3.17 | Danville Community Consolidated School District 118 / 40,017 |
| 378. | 3.17 | Worth School District 127 / 10,356 |
| 379. | 3.17 | Le Roy Community Unit School District 2 / 4,573 |
| 380. | 3.17 | Center Cass School District 66 / 11,134 |
| 381. | 3.17 | Waterloo Community Unit School District 5 / 17,648 |
| 382. | 3.16 | Pearl City Community Unit School District 200 / 2,884 |
| 383. | 3.16 | East Alton-Wood River Community High School District 14 / 15,142 |
| 384. | 3.16 | Peoria School District 150 / 106,668 |
| 385. | 3.16 | Community High School District 99 / 110,166 |
| 386. | 3.16 | Amboy Community Unit School District 272 / 5,427 |
| 387. | 3.16 | Northbrook School District 28 / 13,725 |
| 388. | 3.15 | Ashton Community Unit School District 275 / 4,641 |
| 389. | 3.15 | Bartelso School District 57 / 1,145 |
| 390. | 3.15 | Central School District 51 / 6,674 |
| 391. | 3.14 | Komarek School District 94 / 4,780 |
| 392. | 3.14 | Oak Park Elementary School District 97 / 53,103 |
| 393. | 3.14 | Homewood School District 153 / 15,581 |
| 394. | 3.14 | Christopher Community Unit School District 99 / 4,877 |
| 395. | 3.14 | Stewardson-Strasburg Community Unit District 5A / 2,968 |
| 396. | 3.14 | Albers School District 63 / 1,276 |
| 397. | 3.14 | Richland School District 88A / 10,594 |
| 398. | 3.13 | Grass Lake School District 36 / 2,737 |
| 399. | 3.13 | Lebanon Community Unit School District 9 / 5,713 |
| 400. | 3.13 | Dimmick Community Consolidated School District 175 / 1,177 |
| 401. | 3.13 | Rochester Community Unit School District 3A / 9,666 |
| 402. | 3.13 | Deer Park Community Consolidated School District 82 / 749 |
| 403. | 3.13 | Maroa-Forsyth Community Unit School District 2 / 6,137 |
| 404. | 3.13 | Somonauk Community Unit School District 432 / 4,727 |
| 405. | 3.13 | Marseilles Elementary School District 150 / 4,451 |
| 406. | 3.13 | Ewing Northern Community Consolidated District 115 / 1,878 |
| 407. | 3.13 | Auburn Community Unit School District 10 / 6,606 |
| 408. | 3.12 | Rock Island School District 41 / 44,527 |
| 409. | 3.12 | Southwestern Community Unit School District 9 / 9,899 |
| 410. | 3.12 | Joppa-Maple Grove Unit District 38 / 1,653 |
| 411. | 3.12 | District 50 Schools / 7,192 |
| 412. | 3.12 | Brussels Community Unit School District 42 / 1,469 |
| 413. | 3.12 | Jonesboro Community Consolidated School District 43 / 3,160 |
| 414. | 3.12 | McLean County Unit School District 5 / 89,230 |
| 415. | 3.12 | Elwood Community Consolidated School District 203 / 4,124 |
| 416. | 3.12 | Streator Elementary School District 44 / 16,813 |
| 417. | 3.12 | Durand Community Unit School District 322 / 4,634 |
| 418. | 3.12 | Northbrook/Glenview School District 30 / 10,861 |
| 419. | 3.11 | River Grove School District 85-5 / 7,819 |
| 420. | 3.11 | Illini Bluffs Community Unit School District 327 / 5,468 |
| 421. | 3.11 | Tonica Community Consolidated School District 79 / 1,433 |
| 422. | 3.11 | Morrisonville Community Unit School District 1 / 1,834 |
| 423. | 3.11 | Fairmont School District 89 / 3,120 |
| 424. | 3.11 | Forest Park School District 91 / 15,112 |
| 425. | 3.11 | Bloomingdale School District 13 / 13,793 |
| 426. | 3.10 | Goreville Community Unit School District 1 / 3,419 |
| 427. | 3.10 | North Pekin-Marquette Heights School District 102 / 5,117 |
| 428. | 3.10 | Illinois Valley Central Unit School District 321 / 11,870 |
| 429. | 3.10 | Streator Township High School District 40 / 18,419 |
| 430. | 3.10 | Carbon Cliff-Barstow School District 36 / 1,925 |
| 431. | 3.10 | Gardner Community Consolidated School District 72C / 1,681 |
| 432. | 3.10 | Odin School District 122 / 1,785 |
| 433. | 3.10 | South Wilmington Consolidated School District 74 / 860 |
| 434. | 3.10 | Nettle Creek Community Consolidated School District 24C / 892 |
| 435. | 3.10 | Bannockburn School District 106 / 2,028 |
| 436. | 3.09 | North Greene Unit School District 3 / 6,369 |
| 437. | 3.09 | Rossville-Alvin Community Unit School District 7 / 2,465 |
| 438. | 3.09 | Lena-Winslow Community Unit School District 202 / 5,026 |
| 439. | 3.09 | Montmorency Community Consolidated School District 145 / 2,498 |
| 440. | 3.09 | Glen Ellyn Community Consolidated School District 89 / 21,504 |
| 441. | 3.09 | Fieldcrest Community Unit School District 6 / 7,292 |
| 442. | 3.09 | Odin Community High School District 700 / 1,757 |
| 443. | 3.09 | Woodridge School District 68 / 32,922 |
| 444. | 3.09 | Maercker School District 60 / 17,459 |
| 445. | 3.09 | Germantown Hills School District 69 / 6,234 |
| 446. | 3.08 | A-C Central Community Unit School District 262 / 2,942 |
| 447. | 3.08 | Kell Consolidated School District 2 / 1,083 |
| 448. | 3.08 | Oakwood Community Unit School District 76 / 6,133 |
| 449. | 3.08 | Pleasant Plains Community Unit School District 8 / 7,424 |
| 450. | 3.08 | Shiloh Village School District 85 / 5,353 |
| 451. | 3.08 | New Simpson Hill Consolidated District 32 / 3,367 |
| 452. | 3.08 | Annawan Community Unit School District 226 / 2,249 |
| 453. | 3.08 | New Athens Community Unit School District 60 / 4,581 |
| 454. | 3.08 | Erie Community Unit School District 1 / 4,091 |
| 455. | 3.07 | East Alton School District 13 / 7,963 |
| 456. | 3.07 | Saunemin Community Consolidated School District 438 / 929 |
| 457. | 3.07 | Edinburg Community Unit School District 4 / 2,164 |
| 458. | 3.07 | Cumberland Community Unit School District 77 / 6,233 |
| 459. | 3.07 | Orangeville Community Unit School District 203 / 2,751 |
| 460. | 3.07 | Hinckley-Big Rock Community Unit School District 429 / 5,933 |
| 461. | 3.07 | Vienna High School District 133 / 10,240 |
| 462. | 3.07 | Unity Point Community Consolidated School District 140 / 5,395 |
| 463. | 3.07 | LaSalle Elementary School District 122 / 9,180 |
| 464. | 3.07 | Millstadt Consolidated Community School District 160 / 8,025 |
| 465. | 3.07 | Tolono Community Unit School District 7 / 8,976 |
| 466. | 3.07 | Herrin Community Unit School District 4 / 15,651 |
| 467. | 3.07 | Johnston City Community Unit School District 1 / 7,967 |
| 468. | 3.06 | Spring Lake Community Consolidated School District 606 / 778 |
| 469. | 3.06 | Elverado Community Unit School District 196 / 2,824 |
| 470. | 3.06 | Trico Community Unit School District 176 / 6,587 |
| 471. | 3.06 | Smithton Community Consolidated School District 130 / 3,993 |
| 472. | 3.06 | Ramsey Community Unit School District 204 / 2,718 |
| 473. | 3.06 | Bethalto Consolidated Unit School District 8 / 15,745 |
| 474. | 3.06 | Thompsonville Community Unit School District 174 / 2,047 |
| 475. | 3.06 | Iuka Community Consolidated School District 7 / 1,859 |
| 476. | 3.06 | Madison Community Unit School District 12 / 4,772 |
| 477. | 3.05 | Rock Falls Elementary School District 13 / 8,033 |
| 478. | 3.05 | De Soto Consolidated School District 86 / 1,914 |
| 479. | 3.05 | Bement Community Unit School District 5 / 2,806 |
| 480. | 3.05 | Kewanee Community Unit School District 229 / 9,997 |
| 481. | 3.05 | Pembroke Consolidated Community School District 259 / 2,561 |
| 482. | 3.05 | East Moline School District 37 / 26,810 |
| 483. | 3.05 | Palos Heights School District 128 / 9,613 |
| 484. | 3.05 | Prospect Heights School District 23 / 17,863 |
| 485. | 3.05 | Freeburg Community High School District 77 / 12,110 |
| 486. | 3.05 | Belleville School District 118 / 35,678 |
| 487. | 3.05 | Edwardsville Community Unit School District 7 / 49,060 |
| 488. | 3.05 | St. Anne Community High School District 302 / 5,443 |
| 489. | 3.05 | Silvis School District 34 / 5,245 |
| 490. | 3.05 | Roxana Community Unit School District 1 / 12,019 |
| 491. | 3.05 | Mount Vernon School District 80 / 14,390 |
| 492. | 3.05 | Beardstown Community Unit School District 15 / 7,573 |
| 493. | 3.04 | St. Anne Consolidated Community School District 256 / 2,882 |
| 494. | 3.04 | Winfield School District 34 / 4,638 |
| 495. | 3.04 | Bloomington School District 87 / 43,115 |
| 496. | 3.04 | Putnam County Community Unit School District 535 / 5,431 |
| 497. | 3.04 | Pawnee Community Unit School District 11 / 2,995 |
| 498. | 3.04 | Vandalia Community Unit School District 203 / 9,977 |
| 499. | 3.04 | United Township High School District 30 / 39,811 |
| 500. | 3.04 | Orion Community Unit School District 223 / 5,776 |
| 501. | 3.04 | Bureau Valley Community Unit School District 340 / 6,985 |
| 502. | 3.04 | Leland Community Unit School District 1 / 1,708 |
| 503. | 3.03 | Washington Community High School District 308 / 21,159 |
| 504. | 3.03 | Signal Hill School District 181 / 3,007 |
| 505. | 3.03 | Northwestern Community Unit School District 2 / 2,462 |
| 506. | 3.03 | Cobden School Unit District 17 / 3,710 |
| 507. | 3.03 | Galatia Community Unit School District 1 / 2,302 |
| 508. | 3.03 | Sterling Community Unit District 5 / 21,731 |
| 509. | 3.03 | Edgar County Community Unit District 6 / 2,316 |
| 510. | 3.03 | Metamora Township High School District 122 / 15,154 |
| 511. | 3.03 | Girard Community Unit School District 3 / 4,365 |
| 512. | 3.03 | Freeburg Community Consolidated School District 70 / 7,249 |
| 513. | 3.03 | Central Community Unit School District 4 / 6,581 |
| 514. | 3.03 | Lisle Community Unit School District 202 / 14,078 |
| 515. | 3.02 | Hutsonville Community Unit School District 1 / 2,307 |
| 516. | 3.02 | Roanoke-Benson Community Unit School District 60 / 3,387 |
| 517. | 3.02 | LaSalle-Peru Township High School District 120 / 28,535 |
| 518. | 3.02 | Ohio Community High School District 505 / 869 |
| 519. | 3.02 | Kings Consolidated School District 144 / 1,029 |
| 520. | 3.02 | Rock Falls Township High School District 301 / 14,692 |
| 521. | 3.02 | Miller Township Community Consolidated School District / 2,141 |
| 522. | 3.02 | Palos Community Consolidated School District 118 / 23,341 |
| 523. | 3.02 | Oblong Community Unit School District 4 / 3,824 |
| 524. | 3.02 | Community Unit School District 2 / 6,078 |
| 525. | 3.02 | Cairo Community Unit School District 1 / 3,244 |
| 526. | 3.02 | Field Community Consolidated School District 3 / 2,300 |
| 527. | 3.02 | Morrison Community Unit School District 6 / 6,947 |
| 528. | 3.01 | Selmaville Community Consolidated School District 10 / 1,775 |
| 529. | 3.01 | La Moille Community Unit School District 303 / 2,123 |
| 530. | 3.01 | Prairie Central Community Unit School District 8 / 11,148 |
| 531. | 3.01 | South Pekin School District 137 / 1,835 |
| 532. | 3.01 | Flora Community Unit School District 35 / 8,389 |
| 533. | 3.01 | Westville Community Unit School District 2 / 7,087 |
| 534. | 3.01 | Highland Community Unit School District 5 / 17,129 |
| 535. | 3.00 | Paris-Union School District 95 / 8,648 |
| 536. | 3.00 | Payson Community Unit School District 1 / 3,568 |
| 537. | 3.00 | Moline Unit School District 40 / 48,111 |
| 538. | 3.00 | Limestone Walters Community Consolidated School District 316 / 1,585 |
| 539. | 3.00 | Robein School District 85 / 2,044 |
| 540. | 3.00 | Hampton School District 29 / 2,070 |
| 541. | 3.00 | Salem Community High School District 600 / 14,662 |
| 542. | 3.00 | Fulton County Community Unit School District 3 / 3,662 |
| 543. | 3.00 | Belleville Township High School District 201 / 100,903 |
| 544. | 3.00 | South Fork School District 14 / 2,447 |
| 545. | 3.00 | Limestone Community High School District 310 / 21,447 |
| 546. | 3.00 | Champaign Community Unit School District 4 / 89,676 |
| 547. | 3.00 | Mount Vernon Township High School District 201 / 30,897 |
| 548. | 3.00 | Medinah School District 11 / 6,787 |
| 549. | 3.00 | Donovan Community Unit School District 3 / 2,476 |
| 550. | 3.00 | Odell Community Consolidated School District 435 / 1,529 |
| 551. | 3.00 | Ball-Chatham Community Unit School District 5 / 24,641 |
| 552. | 3.00 | Triad Community Unit School District 2 / 19,194 |
| 553. | 3.00 | Neoga Community Unit School District 3 / 4,777 |
| 554. | 3.00 | Cissna Park Community Unit School District 6 / 1,791 |
| 555. | 3.00 | Metamora Community Consolidated School District 1 / 6,317 |
| 556. | 2.99 | Salem School District 111 / 8,738 |
| 557. | 2.99 | Armstrong-Ellis Consolidated School District 61 / 960 |
| 558. | 2.99 | Oregon Community Unit School District 220 / 11,429 |
| 559. | 2.99 | Jersey Community Unit School District 100 / 19,823 |
| 560. | 2.99 | Greenview Community Unit School District 200 / 1,563 |
| 561. | 2.99 | Salt Creek School District 48 / 9,406 |
| 562. | 2.99 | Carterville Community Unit School District 5 / 10,883 |
| 563. | 2.99 | Midwest Central Community Unit School District 191 / 6,867 |
| 564. | 2.99 | Bethel School District 82 / 1,103 |
| 565. | 2.99 | Granite City Community Unit School District 9 / 45,755 |
| 566. | 2.99 | Clinton Community Unit School District 15 / 11,367 |
| 567. | 2.98 | Western Community Unit School District 12 / 4,041 |
| 568. | 2.98 | Ohio Community Consolidated School District 17 / 862 |
| 569. | 2.98 | Alton Community Unit School District 11 / 49,395 |
| 570. | 2.98 | Peru Elementary School District 124 / 9,971 |
| 571. | 2.98 | Spring Valley Community Consolidated School District 99 / 5,829 |
| 572. | 2.98 | United Community School District 304 / 6,855 |
| 573. | 2.98 | Brooklyn Community Unit School District 188 / 399 |
| 574. | 2.98 | Riverview Consolidated Community School District 2 / 2,603 |
| 575. | 2.98 | Pleasantdale School District 107 / 8,126 |
| 576. | 2.98 | Nokomis Community Unit School District 22 / 4,705 |
| 577. | 2.98 | Ottawa Township High School District 140 / 31,749 |
| 578. | 2.98 | Catlin Community Unit School District 5 / 2,744 |
| 579. | 2.98 | Jamaica Community Unit School District 12 / 2,144 |
| 580. | 2.98 | Greenfield Community Unit School District 10 / 2,804 |
| 581. | 2.98 | Robinson Community Unit School District 2 / 11,881 |
| 582. | 2.98 | Belle Valley School District 119 / 8,087 |
| 583. | 2.97 | Dalzell School District 98 / 830 |
| 584. | 2.97 | Riverton Community Unit School District 14 / 8,083 |
| 585. | 2.97 | Whiteside School District 115 / 11,134 |
| 586. | 2.97 | Creve Coeur School District 76 / 5,617 |
| 587. | 2.97 | Riverdale Community Unit School District 100 / 6,733 |
| 588. | 2.97 | Marissa Community Unit School District 40 / 3,347 |
| 589. | 2.96 | Hamilton Community Consolidated School District 328 / 3,693 |
| 590. | 2.96 | Bradford Community Unit School District 1 / 1,782 |
| 591. | 2.96 | Springfield School District 186 / 116,026 |
| 592. | 2.96 | Ludlow Community Consolidated School District 142 / 1,201 |
| 593. | 2.96 | Benton Consolidated High School District 103 / 12,336 |
| 594. | 2.96 | Lowpoint-Washburn Community Unit School District 21 / 2,369 |
| 595. | 2.96 | Ottawa Elementary School District 141 / 20,411 |
| 596. | 2.96 | Community Consolidated School District 204 / 4,080 |
| 597. | 2.96 | River Bend Community Unit District 2 / 6,710 |
| 598. | 2.96 | Blue Ridge Community Unit School District 18 / 5,565 |
| 599. | 2.96 | Gower School District 62 / 10,468 |
| 600. | 2.96 | Central Community High School District 71 / 15,528 |
| 601. | 2.96 | Name N/A / 3,244 |
| 602. | 2.96 | Marion Community Unit School District 2 / 26,958 |
| 603. | 2.96 | Delavan Community Unit School District 703 / 2,845 |
| 604. | 2.96 | Warrensburg-Latham Community Unit District 11 / 7,270 |
| 605. | 2.96 | Aviston School District 21 / 2,165 |
| 606. | 2.95 | Hamilton County Community Unit School District 10 / 7,649 |
| 607. | 2.95 | Warsaw Community Unit School District 316 / 3,078 |
| 608. | 2.95 | Okaw Valley Community Unit School District 302 / 3,587 |
| 609. | 2.95 | Williamsville Community Unit School District 15 / 6,461 |
| 610. | 2.95 | Name N/A / 5,623 |
| 611. | 2.95 | Central A & M Community Unit School District 21 / 4,923 |
| 612. | 2.95 | Murphysboro Community Unit School District 186 / 14,884 |
| 613. | 2.95 | Brimfield Community Unit School District 309 / 3,052 |
| 614. | 2.95 | Armstrong Township High School District 225 / 1,320 |
| 615. | 2.95 | Farmington Central Community Unit School District 265 / 7,794 |
| 616. | 2.95 | East Coloma School District 12 / 2,647 |
| 617. | 2.95 | Oak Grove School District 68 / 3,595 |
| 618. | 2.95 | Meredosia-Chambersburg Community Unit School District 11 / 1,773 |
| 619. | 2.95 | Pana Community Unit School District 8 / 9,356 |
| 620. | 2.94 | West Northfield School District 31 / 9,246 |
| 621. | 2.94 | Grand Ridge Community Consolidated School District 95 / 2,454 |
| 622. | 2.94 | West Lincoln-Broadwell Elementary School District 92 / 5,094 |
| 623. | 2.94 | Athens Community Unit School District 213 / 5,585 |
| 624. | 2.94 | Egyptian Community Unit School District 5 / 3,674 |
| 625. | 2.94 | Lexington Community Unit School District 7 / 3,071 |
| 626. | 2.94 | Griggsville-Perry Community Unit School District 4 / 2,306 |
| 627. | 2.94 | Rantoul City School District 137 / 12,368 |
| 628. | 2.93 | Pleasant Valley School District 62 / 4,246 |
| 629. | 2.93 | Shawnee Community Unit School District 84 / 3,132 |
| 630. | 2.93 | Benton Community Consolidated School District 47 / 9,861 |
| 631. | 2.93 | Nelson Public School District 8 / 319 |
| 632. | 2.93 | Vienna School District 55 / 5,205 |
| 633. | 2.93 | Hall High School District 502 / 9,021 |
| 634. | 2.93 | Red Bud Community Unit School District 132 / 7,844 |
| 635. | 2.93 | Tuscola Community Unit School District 301 / 5,937 |
| 636. | 2.93 | Steeleville Community Unit School District 138 / 3,263 |
| 637. | 2.93 | Freeport School District 145 / 29,832 |
| 638. | 2.93 | Geneseo Community Unit School District 228 / 15,997 |
| 639. | 2.93 | Beecher City Community Unit School District 20 / 2,557 |
| 640. | 2.93 | Fisher Community Unit School District 1 / 3,063 |
| 641. | 2.92 | New Hope Community Consolidated School District 6 / 1,615 |
| 642. | 2.92 | Ridgeview Community Unit School District 19 / 4,044 |
| 643. | 2.92 | Gibson City-Melvin-Sibley Community Unit School District 5 / 5,819 |
| 644. | 2.92 | Pikeland Community Unit School District 10 / 8,040 |
| 645. | 2.92 | Pleasant Hill School District 69 / 2,146 |
| 646. | 2.92 | Dakota Community Unit School District 201 / 4,354 |
| 647. | 2.92 | Wallace Community Consolidated School District 195 / 2,339 |
| 648. | 2.92 | McClellan Community Consolidated School District 12 / 974 |
| 649. | 2.92 | Panhandle Community Unit School District 2 / 3,644 |
| 650. | 2.92 | ROWVA Community Unit School District 208 / 4,130 |
| 651. | 2.92 | Colona School District 190 / 3,761 |
| 652. | 2.92 | Oakdale Community Consolidated School District 1 / 813 |
| 653. | 2.92 | Mount Zion Community Unit School District 3 / 11,674 |
| 654. | 2.92 | Collinsville Community Unit School District 10 / 45,867 |
| 655. | 2.92 | Litchfield Community Unit School District 12 / 8,584 |
| 656. | 2.92 | Heritage Community Unit School District 8 / 2,902 |
| 657. | 2.92 | Centralia School District 135 / 13,934 |
| 658. | 2.92 | Mount Olive Community Unit School District 5 / 3,375 |
| 659. | 2.91 | Central School District 104 / 3,903 |
| 660. | 2.91 | Quincy School District 172 / 50,733 |
| 661. | 2.91 | Dodds Community Consolidated School District 7 / 1,503 |
| 662. | 2.91 | Windsor Community Unit School District 1 / 2,553 |
| 663. | 2.91 | Heyworth Community Unit School District 4 / 4,649 |
| 664. | 2.91 | Crab Orchard Community Unit School District 3 / 2,228 |
| 665. | 2.91 | Pekin Community High School District 303 / 44,837 |
| 666. | 2.91 | Camp Point Community Unit School District 3 / 5,012 |
| 667. | 2.91 | Pontiac Township High School District 90 / 15,907 |
| 668. | 2.90 | Paxton-Buckley-Loda Community Unit School District 10 / 8,567 |
| 669. | 2.90 | Meridian Community Unit School District 15 / 6,199 |
| 670. | 2.90 | Anna Jonesboro Community High School District 81 / 11,442 |
| 671. | 2.90 | Tri-Point Community Unit School District 6-J / 2,823 |
| 672. | 2.90 | Staunton Community Unit School District 6 / 7,934 |
| 673. | 2.90 | East Peoria Community High School District 309 / 25,502 |
| 674. | 2.90 | Abingdon Community Unit School District 217 / 4,290 |
| 675. | 2.90 | Morton Community Unit School District 709 / 18,644 |
| 676. | 2.90 | Wesclin Community Unit School District 3 / 7,196 |
| 677. | 2.90 | Tri-City Community Unit School District 1 / 3,051 |
| 678. | 2.90 | Carbondale Community High School District 165 / 36,740 |
| 679. | 2.90 | Decatur School District 61 / 70,831 |
| 680. | 2.89 | Rantoul Township High School District 193 / 17,182 |
| 681. | 2.89 | Taylorville Community Unit School District 3 / 18,423 |
| 682. | 2.89 | Monticello Community Unit School District 25 / 8,588 |
| 683. | 2.89 | Prairieview-Ogden Community Consolidated School District 197 / 2,436 |
| 684. | 2.89 | Dwight Common School District 232 / 6,181 |
| 685. | 2.89 | Pontiac Community Consolidated School District 429 / 13,213 |
| 686. | 2.89 | Wabash Community Unit School District 348 / 10,990 |
| 687. | 2.89 | St. Joseph-Ogden Community High School District 305 / 7,990 |
| 688. | 2.89 | Carlinville Community Unit School District 1 / 9,264 |
| 689. | 2.89 | Chester Community Unit School District 139 / 10,256 |
| 690. | 2.89 | Anna Community Consolidated School District 37 / 7,252 |
| 691. | 2.89 | Triopia Community Unit School District 27 / 2,230 |
| 692. | 2.89 | South Central Community Unit School District 401 / 4,294 |
| 693. | 2.89 | Eastland Community Unit School District 308 / 4,460 |
| 694. | 2.88 | Avon Community Unit School District 176 / 1,914 |
| 695. | 2.88 | Damiansville School District 62 / 963 |
| 696. | 2.88 | Akin Community Consolidated School District 91 / 693 |
| 697. | 2.88 | La Harpe Community School District 347 / 2,328 |
| 698. | 2.88 | Havana Community Unit School District 126 / 6,651 |
| 699. | 2.88 | Dwight Township High School District 230 / 6,462 |
| 700. | 2.88 | Grant Community Consolidated School District 110 / 7,532 |
| 701. | 2.88 | Astoria Community Unit School District 1 / 2,130 |
| 702. | 2.88 | Hoyleton Consolidated School District 29 / 1,190 |
| 703. | 2.88 | Dixon Unit School District 170 / 21,710 |
| 704. | 2.88 | Breese School District 12 / 6,783 |
| 705. | 2.88 | DeLand-Weldon Community Unit School District 57 / 1,427 |
| 706. | 2.88 | Pekin Public School District108 / 32,911 |
| 707. | 2.88 | Hillsboro Community Unit School District 3 / 12,979 |
| 708. | 2.88 | Community Unit School District 16 / 4,974 |
| 709. | 2.88 | Pinckneyville Community High School District 101 / 11,114 |
| 710. | 2.87 | Rome Community Consolidated School District 2 / 3,025 |
| 711. | 2.87 | Wethersfield Community Unit School District 230 / 3,683 |
| 712. | 2.87 | Nauvoo-Colusa Community Unit School District 325 / 1,948 |
| 713. | 2.87 | Willow Grove School District 46 / 2,239 |
| 714. | 2.87 | Centralia High School District 200 / 22,033 |
| 715. | 2.87 | Casey-Westfield Community Unit School District 4C / 6,296 |
| 716. | 2.87 | Central City School District 133 / 2,210 |
| 717. | 2.87 | Malden Community Consolidated School District 84 / 671 |
| 718. | 2.87 | Marshall Community Unit School District 2C / 8,439 |
| 719. | 2.87 | Carbondale Elementary School District 95 / 27,322 |
| 720. | 2.87 | Oglesby Elementary School District 125 / 4,408 |
| 721. | 2.86 | Lovington Community Unit School District 303 / 1,744 |
| 722. | 2.86 | St. Joseph Community Consolidated School District 169 / 5,886 |
| 723. | 2.86 | Sangamon Valley Community Unit School District 9 / 3,854 |
| 724. | 2.86 | East Peoria School District 86 / 18,221 |
| 725. | 2.86 | Monmouth-Roseville Community Unit School District 238 / 10,619 |
| 726. | 2.86 | Ina Community Consolidated School District 8 / 3,239 |
| 727. | 2.86 | Washington School District 52 / 7,293 |
| 728. | 2.85 | Villa Grove Community Unit School District 302 / 4,171 |
| 729. | 2.85 | Iroquois West Community Unit School District 10 / 6,370 |
| 730. | 2.85 | Riverdale School District 14 / 1,195 |
| 731. | 2.85 | Sullivan Community Unit School District 300 / 7,263 |
| 732. | 2.85 | Du Quoin Community Unit School District 300 / 9,616 |
| 733. | 2.85 | Bismarck-Henning Consolidated Unit School District / 4,139 |
| 734. | 2.84 | Paris Community Unit School District 4 / 4,339 |
| 735. | 2.84 | Hardin County Community Unit School District 1 / 4,470 |
| 736. | 2.84 | Virden Community Unit School District 4 / 4,927 |
| 737. | 2.84 | Farrington Community Consolidated School District 99 / 532 |
| 738. | 2.84 | Massac Unit School District 1 / 13,392 |
| 739. | 2.84 | Cambridge Community Unit School District 227 / 3,021 |
| 740. | 2.84 | Porta Community Unit School District 202 / 6,925 |
| 741. | 2.84 | Stark County Community Unit School District 100 / 4,849 |
| 742. | 2.84 | Ladd Community Consolidated School District 94 / 1,604 |
| 743. | 2.84 | Monroe School District 70 / 2,637 |
| 744. | 2.84 | Rutland Community Consolidated School District 230 / 755 |
| 745. | 2.84 | Bunker Hill Community Unit School District 8 / 4,337 |
| 746. | 2.84 | Illini Central Community Unit School District 189 / 5,040 |
| 747. | 2.84 | Jasper County Community Unit School District 1 / 9,336 |
| 748. | 2.84 | Alwood Community Unit School District 225 / 2,212 |
| 749. | 2.83 | Raccoon Consolidated School District 1 / 2,238 |
| 750. | 2.83 | Carlyle Community Unit School District 1 / 10,137 |
| 751. | 2.83 | Sesser-Valier Community Unit School District 196 / 4,391 |
| 752. | 2.83 | Olympia Community Unit School District 16 / 12,530 |
| 753. | 2.83 | Shiloh Community Unit School District 1 / 3,065 |
| 754. | 2.83 | Nashville Community High School District 99 / 8,953 |
| 755. | 2.83 | Nashville Consolidated Community School District 49 / 5,145 |
| 756. | 2.83 | Germantown School District 60 / 1,838 |
| 757. | 2.83 | Palestine Community Unit School District 3 / 2,325 |
| 758. | 2.83 | Eldorado Community Unit School District 4 / 7,466 |
| 759. | 2.83 | Urbana School District 116 / 48,785 |
| 760. | 2.83 | Iroquois County Community Unit School District 9 / 7,178 |
| 761. | 2.83 | Sandoval Community Unit School District 501 / 2,891 |
| 762. | 2.82 | Argenta-Oreana Community Unit School District 1 / 4,686 |
| 763. | 2.82 | Woodland Community Unit School District 5 / 3,132 |
| 764. | 2.82 | Cerro Gordo Community Unit School District 100 / 2,810 |
| 765. | 2.82 | Southeastern Community Unit School District 337 / 3,096 |
| 766. | 2.82 | Midland Community Unit School District 7 / 5,363 |
| 767. | 2.82 | Henry-Senachwine Consolidated Unit School District 5 / 3,905 |
| 768. | 2.81 | Cornell Community Consolidated School District 426 / 1,089 |
| 769. | 2.81 | Lostant Community Unit School District 425 / 781 |
| 770. | 2.81 | High Mount School District 116 / 4,545 |
| 771. | 2.81 | Winchester Community Unit School District 1 / 3,761 |
| 772. | 2.81 | Atwood-Hammond Community Unit School District 39 / 2,401 |
| 773. | 2.81 | Cherry School District 92 / 495 |
| 774. | 2.81 | Sherrard Community Unit School District 200 / 9,235 |
| 775. | 2.80 | Lawrence County Community Unit District 20 / 8,750 |
| 776. | 2.80 | Jacksonville School District 117 / 28,917 |
| 777. | 2.80 | Harrisburg Community Unit School District 3 / 13,347 |
| 778. | 2.80 | East Dubuque Community Unit School District 119 / 4,145 |
| 779. | 2.80 | Martinsville Community Unit School District 3C / 2,372 |
| 780. | 2.79 | Hartsburg-Emden Community Unit School District 21 / 1,241 |
| 781. | 2.79 | North Clay Community Unit School District 25 / 3,650 |
| 782. | 2.79 | Sparta Community Unit School District 140 / 8,750 |
| 783. | 2.79 | Ashley Community Consolidated School District 15 / 2,339 |
| 784. | 2.79 | Name N/A / 1,095 |
| 785. | 2.79 | Red Hill Community Unit School District 10 / 7,880 |
| 786. | 2.79 | Allen Township Community Consolidated School District 65 / 966 |
| 787. | 2.79 | New Holland-Middletown Elementary School District 88 / 1,368 |
| 788. | 2.79 | Patoka Community Unit School District 100 / 1,473 |
| 789. | 2.79 | Bushnell-Prairie City Community Unit School District 170 / 4,482 |
| 790. | 2.79 | Knoxville Community Unit School District 202 / 5,883 |
| 791. | 2.79 | Rankin Community School District 98 / 3,816 |
| 792. | 2.79 | Gifford Community Consolidated School District 188 / 1,427 |
| 793. | 2.79 | Edwards County Community Unit School District 1 / 5,564 |
| 794. | 2.78 | Pinckneyville School District 50 / 5,717 |
| 795. | 2.78 | Galesburg Community Unit School District 205 / 34,412 |
| 796. | 2.78 | Spoon River Valley Community Unit School District 4 / 2,273 |
| 797. | 2.78 | Jasper Community Consolidated School District 17 / 1,556 |
| 798. | 2.78 | Thomasboro Community Consolidated School District 130 / 2,214 |
| 799. | 2.77 | East Richland Community Unit School District 1 / 13,566 |
| 800. | 2.77 | Carrier Mills-Stonefort Community Unit School District / 2,986 |
| 801. | 2.77 | Woodlawn Community High School District 205 / 3,079 |
| 802. | 2.77 | Lewistown Community Unit School District 97 / 5,262 |
| 803. | 2.77 | Princeton High School District 500 / 12,111 |
| 804. | 2.77 | Canton Union School District 66 / 17,414 |
| 805. | 2.77 | Princeton Elementary School District 115 / 11,430 |
| 806. | 2.77 | Hollis Consolidated School District 328 / 603 |
| 807. | 2.76 | Chadwick-Milledgeville Community Unit School District 399 / 3,273 |
| 808. | 2.76 | Harmony Emge School District 175 / 9,592 |
| 809. | 2.76 | Meridian Community Unit School District 101 / 3,608 |
| 810. | 2.75 | Geff Community Consolidated School District 14 / 942 |
| 811. | 2.75 | Pleasant Hill Community Unit School District 3 / 2,168 |
| 812. | 2.75 | North Wayne Community Unit School District 200 / 3,031 |
| 813. | 2.74 | Gillespie Community Unit School District 7 / 7,982 |
| 814. | 2.74 | Galva Community Unit School District 224 / 3,689 |
| 815. | 2.74 | Peoria Heights Community Unit School District 325 / 7,095 |
| 816. | 2.74 | Community Unit School District 4 / 4,115 |
| 817. | 2.73 | Lincoln Community High School District 404 / 21,970 |
| 818. | 2.73 | Waverly Community Unit School District 6 / 1,733 |
| 819. | 2.73 | Mattoon Community Unit School District 2 / 22,115 |
| 820. | 2.73 | Clay City Community Unit District 10 / 2,293 |
| 821. | 2.72 | Century Community Unit School District 100 / 2,898 |
| 822. | 2.72 | West Carroll Community Unit School District 314 / 9,144 |
| 823. | 2.72 | Shelbyville Community Unit School District 4 / 7,583 |
| 824. | 2.71 | Carthage Elementary School District 317 / 4,124 |
| 825. | 2.71 | Chester-East Lincoln Community Csd 61 / 3,353 |
| 826. | 2.71 | Scott-Morgan Consolidated Unit School District 2 / 1,501 |
| 827. | 2.71 | Dongola School Unit District 66 / 1,814 |
| 828. | 2.71 | Coulterville Unit School District 1 / 1,614 |
| 829. | 2.71 | Neponset Community Consolidated District 307 / 874 |
| 830. | 2.71 | Fairfield Community High School District 225 / 10,364 |
| 831. | 2.71 | Carrollton Community Unit School District 1 / 3,899 |
| 832. | 2.70 | Grayville Community Unit School District 1 / 2,249 |
| 833. | 2.70 | Summersville School District 79 / 2,104 |
| 834. | 2.69 | Franklin Community Unit School District 1 / 1,558 |
| 835. | 2.69 | West Richland Community Unit School District 2 / 2,029 |
| 836. | 2.69 | Illini West High School District 307 / 8,563 |
| 837. | 2.69 | Norris City-Omaha-Enfield Community Unit School District 3 / 4,375 |
| 838. | 2.69 | Lincoln Elementary School District 27 / 12,155 |
| 839. | 2.68 | West Washington County Community Unit District 10 / 4,077 |
| 840. | 2.68 | Oakland Community Unit School District 5 / 2,129 |
| 841. | 2.68 | Schuyler-Industry Community Unit School District 5 / 7,309 |
| 842. | 2.68 | Name N/A / 1,639 |
| 843. | 2.67 | West Central Community Unit School District 235 / 6,413 |
| 844. | 2.67 | West Prairie Community Unit School District 103 / 4,736 |
| 845. | 2.67 | Irvington County Community Unit School District 11 / 797 |
| 846. | 2.66 | North Wamac School District 186 / 851 |
| 847. | 2.66 | Crescent Iroquois Community Unit School District 249 / 969 |
| 848. | 2.66 | V.I.T. Community Unit School District 2 / 2,274 |
| 849. | 2.65 | River Ridge Community Unit School District 210 / 4,043 |
| 850. | 2.65 | Milford Community Consolidated School District 280 / 3,807 |
| 850. | 2.65 | Milford Township High School District 233 / 3,807 |
| 852. | 2.65 | Warren Community Unit School District 205 / 2,575 |
| 853. | 2.63 | Woodlawn Community Consolidated School District 4 / 2,467 |
| 854. | 2.63 | Wayne City Community Unit School District 100 / 2,900 |
| 855. | 2.62 | Fairfield Public School District 112 / 6,251 |
| 856. | 2.61 | Mount Pulaski Community Unit District 23 / 3,676 |
| 857. | 2.61 | Charleston Community Unit School District 1 / 27,796 |
| 858. | 2.61 | Pope County Community Unit School District 1 / 4,071 |
| 859. | 2.60 | Carmi-White County Community Unit School District 5 / 9,454 |
| 860. | 2.60 | Macomb Community Unit School District 185 / 22,802 |
| 861. | 2.60 | Stockton Community Unit School District 206 / 4,174 |
| 862. | 2.58 | Rooks Creek Community Consolidated School District 425 / 414 |
| 863. | 2.57 | Giant City Community Consolidated School District 130 / 2,109 |
| 864. | 2.56 | Galena Unit School District 120 / 5,525 |
| 865. | 2.56 | Gallatin Community Unit School District 7 / 5,580 |
| 866. | 2.53 | Leepertown Community Consolidated School District 175 / 280 |
| 867. | 2.52 | Williamsfield Community Unit School District 210 / 1,882 |
| 868. | 2.50 | Lick Creek Community Consolidated School District 16 / 1,030 |
| 869. | 2.48 | Dallas Elementary School District 327 / 2,111 |
| 870. | 2.48 | Scales Mound Community Unit School District 211 / 1,621 |
| 871. | 2.47 | Brown County Community Unit School District 1 / 6,592 |
Please note that we only rank locations with 'Average Family Size' data. The rank above might not be a complete list. Locations without 'Average Family Size' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
