| Rank | Average Household Size ▼ | School District / Population |
| 1. | 5.00 | Ayers Elementary School District / 68 |
| 2. | 4.86 | Gildford Colony Elementary School District / 107 |
| 3. | 4.32 | Pryor Elementary School District / 739 |
| 3. | 4.32 | Plenty Coups High School District / 739 |
| 5. | 4.19 | Brockton High School District / 545 |
| 5. | 4.19 | Brockton Elementary School District / 545 |
| 7. | 4.05 | Wyola Elementary School District / 374 |
| 8. | 4.03 | Heart Butte K-12 Schools / 698 |
| 9. | 4.00 | Auchard Creek Elementary School District / 4 |
| 10. | 3.99 | Lame Deer Elementary School District / 2,765 |
| 11. | 3.98 | Lodge Grass High School District / 1,841 |
| 12. | 3.97 | Lodge Grass Elementary School District / 1,467 |
| 13. | 3.87 | Rocky Boy High School District / 2,366 |
| 14. | 3.78 | Rocky Boy Elementary School District / 3,598 |
| 15. | 3.78 | Ross Elementary School District / 68 |
| 16. | 3.76 | Hays-Lodge Pole K-12 Schools / 1,459 |
| 17. | 3.73 | Lame Deer High School District / 5,329 |
| 18. | 3.73 | Miami Elementary School District / 232 |
| 19. | 3.71 | North Harlem Colony Elementary School District / 26 |
| 20. | 3.69 | Lennep Elementary School District / 107 |
| 21. | 3.64 | Frontier Elementary School District / 594 |
| 22. | 3.57 | Yellowstone Academy Elementary School District / 115 |
| 23. | 3.56 | Hardin Elementary School District / 10,144 |
| 24. | 3.53 | Poplar High School District / 3,661 |
| 24. | 3.53 | Poplar Elementary School District / 3,661 |
| 26. | 3.49 | Hardin High School District / 8,868 |
| 27. | 3.47 | Wolf Point High School District / 4,735 |
| 28. | 3.44 | Wolf Point Elementary School District / 4,141 |
| 29. | 3.43 | Frazer Elementary School District / 498 |
| 30. | 3.42 | Liberty Elementary School District / 171 |
| 31. | 3.39 | Browning Elementary School District / 8,635 |
| 32. | 3.36 | Lambert Elementary School District / 393 |
| 33. | 3.28 | Browning High School District / 9,318 |
| 34. | 3.28 | Valley View Elementary School District / 308 |
| 35. | 3.19 | Harlem Elementary School District / 2,405 |
| 36. | 3.19 | Harlem High School District / 2,569 |
| 37. | 3.17 | Box Elder High School District / 440 |
| 37. | 3.17 | Box Elder Elementary School District / 440 |
| 39. | 3.10 | Morin Elementary School District / 397 |
| 40. | 3.08 | Ashland Elementary School District / 1,205 |
| 41. | 3.08 | Lambert High School District / 283 |
| 42. | 3.07 | De Smet Elementary School District / 796 |
| 43. | 3.07 | Davey Elementary School District / 46 |
| 44. | 3.05 | Frazer High School District / 719 |
| 45. | 3.04 | Froid High School District / 502 |
| 45. | 3.04 | Froid Elementary School District / 502 |
| 47. | 3.04 | Willow Creek Elementary School District / 368 |
| 48. | 3.03 | Bainville K-12 Schools / 494 |
| 49. | 3.03 | King Colony Elementary School District / 309 |
| 50. | 3.02 | Hawks Home Elementary School District / 127 |
| 51. | 3.02 | Zurich Elementary School District / 281 |
| 52. | 3.01 | Greenfield Elementary School District / 572 |
| 53. | 3.01 | Power Elementary School District / 608 |
| 54. | 3.01 | Kinsey Elementary School District / 559 |
| 55. | 3.00 | Willow Creek High School District / 315 |
| 55. | 3.00 | Trail Creek Elementary School District / 39 |
| 57. | 2.98 | Cardwell Elementary School District / 435 |
| 58. | 2.96 | Malmborg Elementary School District / 213 |
| 59. | 2.96 | Power High School District / 624 |
| 60. | 2.93 | Big Sandy High School District / 2,612 |
| 61. | 2.92 | Cut Bank Elementary School District / 4,323 |
| 61. | 2.92 | Cut Bank High School District / 4,323 |
| 63. | 2.92 | Bynum Elementary School District / 301 |
| 64. | 2.92 | Cottonwood Elementary School District / 347 |
| 65. | 2.91 | West Valley Elementary School District / 3,967 |
| 66. | 2.91 | Savage High School District / 620 |
| 67. | 2.91 | Savage Elementary School District / 602 |
| 68. | 2.90 | Amsterdam Elementary School District / 2,008 |
| 69. | 2.89 | Elder Grove Elementary School District / 3,410 |
| 70. | 2.88 | Independent Elementary School District / 2,659 |
| 71. | 2.86 | Cleveland Elementary School District / 123 |
| 72. | 2.86 | Helena Flats Elementary School District / 1,780 |
| 73. | 2.85 | St. Regis K-12 Schools / 1,333 |
| 74. | 2.85 | Rapelje Elementary School District / 348 |
| 75. | 2.85 | Bridger K-12 Schools / 1,739 |
| 76. | 2.79 | Park City High School District / 2,061 |
| 77. | 2.77 | Frenchtown K-12 Schools / 6,408 |
| 78. | 2.77 | Shepherd Elementary School District / 4,069 |
| 78. | 2.77 | Shepherd High School District / 4,069 |
| 80. | 2.77 | Montana City Elementary School District / 2,853 |
| 81. | 2.76 | Springdale Elementary School District / 210 |
| 82. | 2.76 | Rapelje High School District / 455 |
| 83. | 2.76 | Pioneer Elementary School District / 1,147 |
| 84. | 2.75 | Anderson Elementary School District / 1,397 |
| 85. | 2.75 | Kester Elementary School District / 44 |
| 85. | 2.75 | Cayuse Prairie Elementary School District / 2,379 |
| 87. | 2.74 | Vaughn Elementary School District / 1,034 |
| 88. | 2.73 | Moore Elementary School District / 519 |
| 88. | 2.73 | Moore High School District / 519 |
| 90. | 2.73 | Turner Elementary School District / 322 |
| 91. | 2.72 | Park City Elementary School District / 2,265 |
| 92. | 2.72 | Ulm Elementary School District / 637 |
| 93. | 2.72 | Smith Valley Elementary School District / 1,883 |
| 94. | 2.72 | Deer Park Elementary School District / 1,119 |
| 95. | 2.71 | Cottonwood Elementary School District / 114 |
| 96. | 2.71 | Alzada Elementary School District / 176 |
| 97. | 2.71 | Broadview Elementary School District / 893 |
| 98. | 2.70 | Cohagen Elementary School District / 169 |
| 99. | 2.70 | Broadview High School District / 943 |
| 100. | 2.69 | Colstrip High School District / 2,445 |
| 100. | 2.69 | Colstrip Elementary School District / 2,445 |
| 102. | 2.68 | Simms High School District / 3,330 |
| 103. | 2.68 | Culbertson High School District / 924 |
| 104. | 2.67 | Trinity Elementary School District / 1,733 |
| 105. | 2.67 | Turner High School District / 307 |
| 106. | 2.67 | Spring Creek Elementary School District / 44 |
| 107. | 2.67 | Lolo Elementary School District / 4,903 |
| 108. | 2.66 | Fairfield High School District / 1,965 |
| 109. | 2.65 | Sun River Valley Elementary School District / 2,296 |
| 110. | 2.65 | Clinton Elementary School District / 2,448 |
| 111. | 2.64 | Clancy Elementary School District / 2,935 |
| 112. | 2.64 | Pendroy Elementary School District / 221 |
| 113. | 2.64 | Charlo Elementary School District / 1,248 |
| 114. | 2.63 | Canyon Creek Elementary School District / 2,315 |
| 115. | 2.63 | Jefferson High School District / 8,158 |
| 116. | 2.63 | Melville Elementary School District / 237 |
| 117. | 2.63 | Culbertson Elementary School District / 1,007 |
| 118. | 2.63 | Carter Elementary School District / 208 |
| 119. | 2.63 | Florence-Carlton K-12 Schools / 5,211 |
| 120. | 2.63 | Belgrade Elementary School District / 20,497 |
| 121. | 2.63 | Creston Elementary School District / 1,111 |
| 122. | 2.62 | Belgrade High School District / 20,718 |
| 123. | 2.61 | East Helena Elementary School District / 9,282 |
| 124. | 2.61 | Lockwood Elementary School District / 8,067 |
| 125. | 2.60 | Highwood High School District / 513 |
| 126. | 2.60 | Kila Elementary School District / 2,090 |
| 127. | 2.60 | Big Timber Elementary School District / 2,771 |
| 128. | 2.60 | Trego Elementary School District / 753 |
| 129. | 2.60 | Kircher Elementary School District / 797 |
| 130. | 2.60 | Victor K-12 Schools / 3,538 |
| 131. | 2.59 | Ronan High School District / 8,707 |
| 131. | 2.59 | Ronan Elementary School District / 8,707 |
| 133. | 2.59 | Evergreen Elementary School District / 5,586 |
| 134. | 2.59 | Charlo High School District / 1,834 |
| 135. | 2.59 | Warrick Elementary School District / 44 |
| 136. | 2.58 | Sunset Elementary School District / 209 |
| 137. | 2.58 | Helmville Elementary School District / 299 |
| 138. | 2.58 | Target Range Elementary School District / 3,691 |
| 139. | 2.57 | Deep Creek Elementary School District / 95 |
| 140. | 2.56 | Rosebud High School District / 482 |
| 141. | 2.56 | Sweet Grass County High School District / 3,511 |
| 142. | 2.56 | Arlee Elementary School District / 2,479 |
| 142. | 2.56 | Arlee High School District / 2,479 |
| 144. | 2.55 | Corvallis K-12 Schools / 7,474 |
| 145. | 2.55 | Fairfield Elementary School District / 1,270 |
| 146. | 2.54 | Manhattan High School District / 4,431 |
| 147. | 2.54 | Olney-Bissell Elementary School District / 1,184 |
| 148. | 2.54 | Hall Elementary School District / 322 |
| 149. | 2.53 | Molt Elementary School District / 157 |
| 150. | 2.53 | Cooke City Elementary School District / 43 |
| 151. | 2.53 | Lone Rock Elementary School District / 3,095 |
| 152. | 2.53 | McLeod Elementary School District / 240 |
| 153. | 2.52 | Centerville Elementary School District / 1,665 |
| 154. | 2.52 | Judith Gap Elementary School District / 325 |
| 154. | 2.52 | Judith Gap High School District / 325 |
| 156. | 2.52 | Cascade High School District / 2,639 |
| 157. | 2.51 | Flathead High School District / 58,126 |
| 158. | 2.51 | White Sulphur Springs High School District / 2,026 |
| 159. | 2.51 | Baker K-12 Schools / 2,568 |
| 160. | 2.51 | Sand Springs Elementary School District / 148 |
| 161. | 2.51 | Centerville High School District / 1,615 |
| 162. | 2.51 | Deer Creek Elementary School District / 1,810 |
| 163. | 2.50 | Vida Elementary School District / 591 |
| 164. | 2.50 | Superior K-12 Schools / 2,108 |
| 165. | 2.50 | Dupuyer Elementary School District / 188 |
| 165. | 2.50 | S Y Elementary School District / 75 |
| 165. | 2.50 | Grass Range High School District / 488 |
| 165. | 2.50 | Deerfield Elementary School District / 10 |
| 165. | 2.50 | Galata Elementary School District / 300 |
| 170. | 2.50 | Columbia Falls Elementary School District / 14,658 |
| 171. | 2.49 | Dixon Elementary School District / 586 |
| 172. | 2.49 | Columbus Elementary School District / 3,754 |
| 173. | 2.49 | Columbia Falls High School District / 15,228 |
| 174. | 2.49 | Boulder Elementary School District / 2,137 |
| 175. | 2.48 | Big Sandy Elementary School District / 1,336 |
| 176. | 2.48 | Elliston Elementary School District / 484 |
| 177. | 2.48 | Pleasant Valley Elementary School District / 219 |
| 178. | 2.48 | Three Forks High School District / 3,381 |
| 179. | 2.47 | Columbus High School District / 3,958 |
| 180. | 2.47 | White Sulphur Springs Elementary School District / 1,919 |
| 181. | 2.47 | Blue Creek Elementary School District / 2,052 |
| 182. | 2.46 | Fair-Mont-Egan Elementary School District / 1,341 |
| 183. | 2.45 | Havre High School District / 12,531 |
| 184. | 2.45 | Stevensville High School District / 10,247 |
| 185. | 2.45 | S H Elementary School District / 157 |
| 186. | 2.45 | Conrad High School District / 3,800 |
| 187. | 2.45 | Cascade Elementary School District / 1,907 |
| 188. | 2.45 | Laurel Elementary School District / 10,438 |
| 189. | 2.45 | Gallatin Gateway Elementary School District / 1,711 |
| 190. | 2.45 | Harrison K-12 Schools / 749 |
| 191. | 2.44 | Sidney High School District / 8,438 |
| 192. | 2.44 | Arrowhead Elementary School District / 1,718 |
| 193. | 2.44 | Three Forks Elementary School District / 3,485 |
| 194. | 2.44 | Havre Elementary School District / 12,161 |
| 195. | 2.44 | Roundup Elementary School District / 4,399 |
| 196. | 2.44 | Sidney Elementary School District / 7,775 |
| 197. | 2.43 | Laurel High School District / 10,113 |
| 198. | 2.43 | Chester-Joplin-Inverness High School District / 2,391 |
| 199. | 2.43 | Rau Elementary School District / 391 |
| 200. | 2.43 | Carter County High School District / 1,187 |
| 201. | 2.42 | Stevensville Elementary School District / 7,152 |
| 202. | 2.42 | Garfield County High School District / 1,097 |
| 203. | 2.42 | Joliet High School District / 2,414 |
| 204. | 2.42 | Somers Elementary School District / 6,322 |
| 205. | 2.41 | La Motte Elementary School District / 778 |
| 206. | 2.41 | Hinsdale Elementary School District / 461 |
| 207. | 2.41 | Roundup High School District / 4,551 |
| 208. | 2.41 | Conrad Elementary School District / 3,568 |
| 209. | 2.41 | Kalispell Elementary School District / 28,320 |
| 210. | 2.41 | Billings High School District / 133,015 |
| 211. | 2.41 | Plevna K-12 Schools / 460 |
| 212. | 2.41 | Marion Elementary School District / 1,486 |
| 213. | 2.41 | Lavina K-12 Schools / 385 |
| 214. | 2.41 | Drummond High School District / 1,489 |
| 215. | 2.41 | Name N/A / 891,341 |
| 216. | 2.41 | Knees Elementary School District / 135 |
| 217. | 2.40 | Fairview Elementary School District / 1,303 |
| 218. | 2.40 | Monforton Elementary School District / 2,232 |
| 219. | 2.40 | North Star High School District / 941 |
| 220. | 2.40 | Grass Range Elementary School District / 420 |
| 221. | 2.40 | Terry K-12 Schools / 1,282 |
| 222. | 2.39 | Hinsdale High School District / 490 |
| 223. | 2.39 | Dodson High School District / 344 |
| 223. | 2.39 | Saco High School District / 516 |
| 225. | 2.39 | East Glacier Park Elementary School District / 683 |
| 226. | 2.38 | Fairview High School District / 1,345 |
| 227. | 2.38 | Gardiner High School District / 1,776 |
| 228. | 2.38 | Hobson K-12 Schools / 755 |
| 229. | 2.38 | Gardiner Elementary School District / 1,733 |
| 230. | 2.38 | Helena High School District / 62,953 |
| 231. | 2.38 | Chester-Joplin-Inverness Elementary School District / 2,185 |
| 232. | 2.38 | Avon Elementary School District / 237 |
| 233. | 2.37 | Drummond Elementary School District / 1,167 |
| 234. | 2.37 | Noxon Elementary School District / 1,502 |
| 235. | 2.37 | Saco Elementary School District / 545 |
| 236. | 2.37 | Billings Elementary School District / 111,515 |
| 237. | 2.37 | Park High School District / 12,483 |
| 238. | 2.37 | Lustre Elementary School District / 221 |
| 239. | 2.36 | Swan River Elementary School District / 1,489 |
| 240. | 2.36 | Luther Elementary School District / 385 |
| 241. | 2.36 | Name N/A / 2,538 |
| 242. | 2.36 | Golden Ridge Elementary School District / 139 |
| 243. | 2.35 | Livingston Elementary School District / 10,129 |
| 244. | 2.35 | Biddle Elementary School District / 101 |
| 245. | 2.35 | Alberton K-12 Schools / 1,286 |
| 246. | 2.34 | Valier High School District / 1,210 |
| 247. | 2.34 | Great Falls High School District / 72,595 |
| 248. | 2.34 | Joliet Elementary School District / 2,089 |
| 249. | 2.34 | Denton High School District / 479 |
| 250. | 2.34 | Great Falls Elementary School District / 72,487 |
| 251. | 2.33 | Helena Elementary School District / 51,357 |
| 252. | 2.33 | Denton Elementary School District / 469 |
| 253. | 2.33 | Manhattan Elementary School District / 2,390 |
| 254. | 2.33 | Basin Elementary School District / 233 |
| 255. | 2.33 | Belfry K-12 Schools / 628 |
| 256. | 2.33 | Bonner Elementary School District / 2,581 |
| 257. | 2.33 | Shields Valley Elementary School District / 1,705 |
| 257. | 2.33 | Shields Valley High School District / 1,705 |
| 259. | 2.32 | Custer County High School District / 11,869 |
| 260. | 2.32 | Missoula High School District / 102,467 |
| 261. | 2.32 | Polson Elementary School District / 10,500 |
| 262. | 2.32 | Potomac Elementary School District / 1,062 |
| 263. | 2.32 | Belt Elementary School District / 1,832 |
| 264. | 2.32 | Richey Elementary School District / 426 |
| 265. | 2.31 | Valier Elementary School District / 1,022 |
| 266. | 2.31 | St. Ignatius K-12 Schools / 3,369 |
| 267. | 2.31 | Pine Creek Elementary School District / 448 |
| 268. | 2.31 | Ekalaka Elementary School District / 884 |
| 269. | 2.31 | Reichle Elementary School District / 127 |
| 270. | 2.31 | Polson High School District / 11,606 |
| 271. | 2.30 | Grant Elementary School District / 76 |
| 272. | 2.30 | Belt High School District / 1,774 |
| 273. | 2.30 | Whitefish Elementary School District / 13,008 |
| 274. | 2.30 | Choteau High School District / 2,921 |
| 275. | 2.30 | Whitefish High School District / 13,669 |
| 276. | 2.29 | Bozeman High School District / 59,840 |
| 277. | 2.29 | Fortine Elementary School District / 898 |
| 278. | 2.29 | Powell County High School District / 7,207 |
| 279. | 2.29 | Hellgate Elementary School District / 13,024 |
| 280. | 2.29 | Sunburst K-12 Schools / 1,115 |
| 281. | 2.29 | Missoula Elementary School District / 70,909 |
| 282. | 2.28 | Circle High School District / 1,758 |
| 283. | 2.28 | Malta K-12 Schools / 3,160 |
| 284. | 2.28 | Roy K-12 Schools / 278 |
| 285. | 2.28 | Harlowton Elementary School District / 1,816 |
| 286. | 2.28 | Pine Grove Elementary School District / 66 |
| 287. | 2.27 | Dutton/Brady K-12 Schools / 1,068 |
| 288. | 2.27 | Lindsay Elementary School District / 291 |
| 289. | 2.27 | Geraldine High School District / 568 |
| 290. | 2.27 | Deer Lodge Elementary School District / 5,648 |
| 291. | 2.27 | Garrison Elementary School District / 93 |
| 292. | 2.27 | Huntley Project K-12 Schools / 3,538 |
| 293. | 2.27 | Bozeman Elementary School District / 53,316 |
| 294. | 2.27 | Winifred K-12 Schools / 424 |
| 295. | 2.27 | Nashua K-12 Schools / 800 |
| 296. | 2.27 | Miles City Elementary School District / 10,064 |
| 297. | 2.26 | Chinook High School District / 2,241 |
| 298. | 2.26 | Glasgow K-12 Schools / 5,202 |
| 299. | 2.26 | Townsend K-12 Schools / 5,219 |
| 300. | 2.26 | Ramsay Elementary School District / 1,114 |
| 301. | 2.26 | Forsyth Elementary School District / 2,609 |
| 302. | 2.26 | Harlowton High School District / 1,882 |
| 303. | 2.25 | Fishtail Elementary School District / 392 |
| 304. | 2.24 | Geyser Elementary School District / 389 |
| 304. | 2.24 | Gold Creek Elementary School District / 207 |
| 304. | 2.24 | Geyser High School District / 389 |
| 307. | 2.24 | Fromberg K-12 Schools / 1,030 |
| 308. | 2.24 | Jordan Elementary School District / 602 |
| 309. | 2.24 | Dawson High School District / 8,728 |
| 310. | 2.24 | Broadus Elementary School District / 1,476 |
| 311. | 2.24 | North Star Elementary School District / 811 |
| 312. | 2.24 | Hysham K-12 Schools / 761 |
| 313. | 2.24 | Roberts K-12 Schools / 747 |
| 314. | 2.24 | Thompson Falls Elementary School District / 3,734 |
| 314. | 2.24 | Thompson Falls High School District / 3,734 |
| 316. | 2.24 | Reedpoint High School District / 711 |
| 317. | 2.24 | Forsyth High School District / 2,680 |
| 318. | 2.23 | Reedpoint Elementary School District / 718 |
| 319. | 2.23 | Twin Bridges K-12 Schools / 1,382 |
| 320. | 2.23 | Choteau Elementary School District / 2,399 |
| 321. | 2.22 | Lincoln K-12 Schools / 1,130 |
| 322. | 2.22 | Winnett K-12 Schools / 489 |
| 323. | 2.22 | Powder River County High School District / 1,728 |
| 324. | 2.22 | Lincoln County High School District / 6,459 |
| 325. | 2.22 | Hamilton K-12 Schools / 11,592 |
| 326. | 2.22 | Whitehall High School District / 3,793 |
| 327. | 2.21 | Wibaux K-12 Schools / 987 |
| 328. | 2.21 | Paradise Elementary School District / 389 |
| 329. | 2.20 | Chinook Elementary School District / 1,856 |
| 330. | 2.20 | Shelby High School District / 4,093 |
| 331. | 2.19 | Richey High School District / 491 |
| 332. | 2.19 | Butte Elementary School District / 33,054 |
| 333. | 2.19 | Butte High School District / 34,435 |
| 334. | 2.19 | Wise River Elementary School District / 383 |
| 335. | 2.19 | Whitlash Elementary School District / 35 |
| 336. | 2.19 | Greycliff Elementary School District / 234 |
| 337. | 2.19 | Jackson Elementary School District / 129 |
| 338. | 2.18 | Circle Elementary School District / 1,167 |
| 339. | 2.18 | Wolf Creek Elementary School District / 581 |
| 340. | 2.18 | McCormick Elementary School District / 500 |
| 341. | 2.18 | Bigfork High School District / 7,593 |
| 342. | 2.18 | Spring Creek Elementary School District / 87 |
| 343. | 2.17 | Absarokee Elementary School District / 1,608 |
| 344. | 2.17 | Noxon High School District / 2,403 |
| 345. | 2.17 | Glendive Elementary School District / 6,617 |
| 346. | 2.17 | Red Lodge High School District / 3,631 |
| 347. | 2.17 | Shelby Elementary School District / 3,793 |
| 348. | 2.16 | Libby K-12 Schools / 9,600 |
| 349. | 2.16 | Eureka Elementary School District / 4,808 |
| 350. | 2.16 | Elysian Elementary School District / 1,338 |
| 351. | 2.16 | Fergus High School District / 9,271 |
| 352. | 2.16 | Ennis K-12 Schools / 3,483 |
| 353. | 2.15 | West Glacier Elementary School District / 570 |
| 354. | 2.15 | Bigfork Elementary School District / 5,893 |
| 355. | 2.15 | Red Lodge Elementary School District / 3,112 |
| 356. | 2.15 | Sheridan Elementary School District / 1,378 |
| 357. | 2.14 | Lima K-12 Schools / 522 |
| 358. | 2.14 | Whitehall Elementary School District / 3,215 |
| 359. | 2.14 | Custer K-12 Schools / 411 |
| 360. | 2.14 | Lewistown Elementary School District / 8,920 |
| 361. | 2.14 | Medicine Lake K-12 Schools / 747 |
| 362. | 2.13 | Plains High School District / 3,177 |
| 363. | 2.13 | Dillon Elementary School District / 7,763 |
| 364. | 2.13 | Sheridan High School District / 1,650 |
| 365. | 2.12 | Absarokee High School District / 2,076 |
| 366. | 2.12 | Plains Elementary School District / 2,788 |
| 367. | 2.12 | Cottonwood Elementary School District / 193 |
| 368. | 2.12 | Beaverhead County High School District / 8,772 |
| 369. | 2.12 | Opheim K-12 Schools / 307 |
| 370. | 2.12 | Anaconda Elementary School District / 8,970 |
| 371. | 2.12 | Anaconda High School District / 9,046 |
| 372. | 2.11 | Stanford K-12 Schools / 835 |
| 373. | 2.11 | Plentywood K-12 Schools / 2,464 |
| 374. | 2.10 | West Yellowstone K-12 School District / 2,041 |
| 375. | 2.09 | Darby K-12 Schools / 3,554 |
| 376. | 2.07 | Augusta High School District / 689 |
| 377. | 2.07 | Ryegate K-12 Schools / 353 |
| 378. | 2.07 | Benton Lake Elementary School District / 95 |
| 379. | 2.06 | Augusta Elementary School District / 685 |
| 380. | 2.06 | Swan Valley Elementary School District / 639 |
| 381. | 2.06 | Fort Benton High School District / 2,166 |
| 382. | 2.04 | Bloomfield Elementary School District / 98 |
| 383. | 2.04 | Philipsburg K-12 Schools / 1,644 |
| 384. | 2.04 | Troy High School District / 3,396 |
| 385. | 2.03 | Melstone High School District / 179 |
| 386. | 2.03 | Birney Elementary School District / 120 |
| 387. | 2.03 | Troy Elementary School District / 2,629 |
| 388. | 2.03 | Alder Elementary School District / 272 |
| 389. | 2.03 | Springhill Elementary School District / 148 |
| 390. | 2.02 | Seeley Lake Elementary School District / 1,571 |
| 391. | 2.01 | Scobey K-12 Schools / 1,813 |
| 392. | 2.00 | Spring Creek Colony Elementary School District / 42 |
| 392. | 2.00 | Pass Creek Elementary School District / 92 |
| 394. | 1.99 | Westby K-12 Schools / 299 |
| 395. | 1.99 | Ovando Elementary School District / 239 |
| 396. | 1.99 | Fort Benton Elementary School District / 1,728 |
| 397. | 1.97 | Brorson Elementary School District / 116 |
| 398. | 1.97 | Woodman Elementary School District / 458 |
| 399. | 1.96 | Whitewater K-12 Schools / 174 |
| 400. | 1.95 | Swan Lake-Salmon Elementary School District / 387 |
| 401. | 1.95 | Upper West Shore Elementary School District / 798 |
| 402. | 1.94 | Melrose Elementary School District / 97 |
| 403. | 1.93 | Hot Springs High School District / 1,471 |
| 404. | 1.91 | Trout Creek Elementary School District / 901 |
| 405. | 1.90 | Melstone Elementary School District / 402 |
| 406. | 1.87 | Yaak Elementary School District / 267 |
| 407. | 1.86 | Bear Paw Elementary School District / 104 |
| 408. | 1.83 | Divide Elementary School District / 170 |
| 409. | 1.79 | Wisdom Elementary School District / 285 |
| 410. | 1.78 | Shawmut Elementary School District / 66 |
| 411. | 1.73 | Polaris Elementary School District / 85 |
| 412. | 1.70 | Nye Elementary School District / 210 |
| 413. | 1.68 | South Stacey Elementary School District / 47 |
Please note that we only rank locations with 'Average Household Size' data. The rank above might not be a complete list. Locations without 'Average Household Size' data are not listed.
