| Rank | Median Age ▲ | School District / Population |
| 1. | 25.50 | Plainview School District RE-2 / 293 |
| 2. | 25.70 | Vilas School District RE-5 / 342 |
| 3. | 25.80 | Fountain School District 8 / 33,325 |
| 4. | 27.40 | Harrison School District 2 / 73,557 |
| 5. | 30.30 | Greeley School District 6 / 119,134 |
| 6. | 30.40 | Alamosa School District RE-11J / 14,931 |
| 7. | 30.50 | Adams County School District 14 / 38,448 |
| 8. | 30.70 | Widefield School District 3 / 48,360 |
| 9. | 30.90 | Rangely School District RE-4 / 3,102 |
| 10. | 31.70 | Adams-Arapahoe School District 28J / 214,656 |
| 11. | 31.90 | Poudre School District R-1 / 191,740 |
| 11. | 31.90 | Falcon School District 49 / 79,075 |
| 13. | 33.10 | Bethune School District R-5 / 594 |
| 14. | 33.20 | Johnstown-Milliken School District RE-5J / 17,883 |
| 14. | 33.20 | Mapleton School District 1 / 31,238 |
| 16. | 33.30 | Sheridan School District 2 / 8,548 |
| 17. | 33.40 | Liberty School District J-4 / 600 |
| 18. | 33.50 | Brighton School District 27J / 81,937 |
| 19. | 33.60 | Idalia School District RJ-3 / 542 |
| 20. | 33.70 | Westminster School District 50 / 73,584 |
| 21. | 33.80 | Kit Carson School District R-1 / 561 |
| 22. | 34.00 | Denver County School District 1 / 633,777 |
| 22. | 34.00 | Gunnison Watershed School District RE-1J / 15,435 |
| 24. | 34.10 | Northglenn-Thornton School District 12 / 218,955 |
| 25. | 34.30 | Garfield School District RE-2 / 24,414 |
| 26. | 34.40 | Wray School District RD-2 / 3,991 |
| 27. | 34.80 | Boulder Valley School District RE-2 / 220,354 |
| 28. | 35.00 | Eagle County School District RE 50 / 43,984 |
| 28. | 35.00 | Fort Morgan School District RE-3 / 17,284 |
| 30. | 35.30 | Woodlin School District R-104 / 506 |
| 31. | 35.40 | Ellicott School District 22 / 4,184 |
| 31. | 35.40 | Keenesburg School District RE-3J / 13,595 |
| 33. | 35.60 | Peyton School District 23-JT / 4,130 |
| 34. | 35.70 | Granada School District RE-1 / 1,026 |
| 35. | 35.80 | McClave School District RE-2 / 706 |
| 36. | 35.90 | Colorado Springs School District 11 / 235,794 |
| 36. | 35.90 | Academy School District 20 / 99,520 |
| 38. | 36.00 | Cherry Creek School District 5 / 286,782 |
| 39. | 36.20 | Swink School District 33 / 1,508 |
| 40. | 36.30 | Eaton School District RE-2 / 9,568 |
| 40. | 36.30 | North Conejos School District RE-1J / 4,771 |
| 40. | 36.30 | Center School District 26-JT / 2,964 |
| 43. | 36.60 | Summit School District RE-1 / 28,389 |
| 44. | 36.70 | Moffat County School District RE-1 / 13,286 |
| 44. | 36.70 | Weld County School District RE-8 / 12,355 |
| 44. | 36.70 | Limon School District RE-4J / 3,576 |
| 47. | 36.80 | Cheraw School District 31 / 595 |
| 47. | 36.80 | Valley School District RE-1 / 20,236 |
| 49. | 36.90 | Brush School District RE-2J / 7,844 |
| 50. | 37.10 | Lamar School District RE-2 / 9,183 |
| 50. | 37.10 | Englewood School District 1 / 25,598 |
| 50. | 37.10 | Durango School District 9-R / 38,974 |
| 50. | 37.10 | Roaring Fork School District RE-1 / 38,129 |
| 54. | 37.20 | Burlington School District RE-6J / 5,241 |
| 54. | 37.20 | Windsor School District RE-4 / 22,539 |
| 56. | 37.30 | Douglas County School District RE-1 / 302,027 |
| 57. | 37.40 | Cheyenne County School District RE-5 / 1,592 |
| 57. | 37.40 | St. Vrain Valley School District RE 1J / 158,582 |
| 59. | 37.80 | Strasburg School District 31J / 5,119 |
| 59. | 37.80 | Garfield County School District 16 / 6,409 |
| 59. | 37.80 | Wiley School District RE-13-JT / 925 |
| 59. | 37.80 | Holyoke School District RE-1J / 3,182 |
| 63. | 37.90 | Pueblo City School District 60 / 110,267 |
| 64. | 38.10 | Mesa County Valley School District 51 / 144,366 |
| 64. | 38.10 | Sanford School District 6J / 1,344 |
| 66. | 38.30 | Weld County School District RE-1 / 9,691 |
| 67. | 38.60 | Telluride School District R-1 / 5,964 |
| 68. | 38.80 | Steamboat Springs School District RE-2 / 17,654 |
| 69. | 38.90 | Monte Vista School District C-8 / 6,183 |
| 70. | 39.00 | Lake County School District R-1 / 7,311 |
| 71. | 39.10 | Platte Valley School District RE-7 / 4,947 |
| 72. | 39.40 | Sargent School District RE-33J / 1,052 |
| 73. | 39.50 | East Otero School District R-1 / 8,472 |
| 73. | 39.50 | Florence School District RE-2 / 17,516 |
| 73. | 39.50 | Hoehne Reorganized School District 3 / 2,079 |
| 76. | 39.60 | Crowley County School District RE-1-J / 5,266 |
| 77. | 39.70 | Hanover School District 28 / 2,125 |
| 78. | 39.80 | Ault-Highland School District RE-9 / 5,615 |
| 79. | 39.90 | Buffalo School District RE-4 / 803 |
| 79. | 39.90 | Prairie School District RE-11 / 470 |
| 81. | 40.10 | Akron School District R-1 / 2,653 |
| 82. | 40.20 | West Grand School District 1-JT / 3,216 |
| 82. | 40.20 | Rocky Ford School District R-2 / 5,908 |
| 84. | 40.30 | Jefferson County School District R-1 / 549,339 |
| 84. | 40.30 | Sangre de Cristo School District RE-22J / 1,332 |
| 86. | 40.40 | Hayden School District RE-1 / 2,688 |
| 87. | 40.50 | Meeker School District RE1 / 3,637 |
| 88. | 40.60 | Thompson School District R-2J / 109,215 |
| 89. | 41.00 | Yuma School District 1 / 4,874 |
| 89. | 41.00 | Holly School District RE-3 / 1,370 |
| 89. | 41.00 | Ignacio School District 11-JT / 6,023 |
| 92. | 41.10 | Montezuma-Cortez School District RE-1 / 18,638 |
| 93. | 41.20 | Pueblo County School District 70 / 50,228 |
| 94. | 41.30 | Wiggins School District RE-50J / 2,637 |
| 95. | 41.50 | Las Animas School District RE-1 / 5,149 |
| 96. | 41.60 | Frenchman School District RE-3 / 1,058 |
| 97. | 41.70 | Deer Trail School District 26J / 666 |
| 98. | 41.80 | Elbert School District 200 / 1,393 |
| 99. | 42.10 | Stratton School District R-4 / 1,066 |
| 100. | 42.30 | De Beque School District 49-JT / 713 |
| 101. | 42.50 | Eads School District RE-1 / 1,114 |
| 102. | 42.60 | East Grand School District 2 / 11,465 |
| 103. | 42.70 | Bennett School District 29-J / 5,758 |
| 104. | 43.10 | Aspen School District 1 / 13,208 |
| 105. | 43.20 | Byers School District 32J / 2,695 |
| 106. | 43.40 | Agate School District 300 / 748 |
| 107. | 43.50 | Montrose County School District RE-1J / 38,523 |
| 108. | 43.60 | Manzanola School District 3J / 893 |
| 108. | 43.60 | Trinidad School District 1 / 9,842 |
| 108. | 43.60 | Littleton School District 6 / 96,044 |
| 111. | 43.80 | Lewis-Palmer School District 38 / 29,871 |
| 111. | 43.80 | Elizabeth School District C-1 / 14,949 |
| 113. | 43.90 | Del Norte School District C-7 / 4,406 |
| 114. | 44.00 | Kiowa School District C-2 / 2,634 |
| 115. | 44.50 | Fowler School District R-4J / 1,948 |
| 116. | 45.10 | Plateau Valley School District 50 / 2,507 |
| 117. | 45.30 | Silverton School District 1 / 653 |
| 118. | 45.50 | Bayfield School District R-10-JT / 8,145 |
| 119. | 45.70 | South Conejos School District RE-10 / 2,179 |
| 120. | 45.80 | Canon City School District RE-1 / 27,013 |
| 120. | 45.80 | Lone Star School District 101 / 220 |
| 122. | 45.90 | Dolores County School District RE-2 / 1,898 |
| 123. | 46.20 | South Routt School District RE-3 / 2,975 |
| 124. | 46.30 | Briggsdale School District RE-10 / 553 |
| 125. | 46.40 | Platte Canyon School District 1 / 9,526 |
| 125. | 46.40 | Haxtun School District RE-2J / 1,373 |
| 127. | 46.50 | Calhan School District RJ-1 / 2,958 |
| 127. | 46.50 | North Park School District R-1 / 1,389 |
| 129. | 46.60 | Plateau School District RE-5 / 546 |
| 129. | 46.60 | Platte Valley School District RE-3 / 809 |
| 131. | 46.70 | Manitou Springs School District 14 / 8,345 |
| 131. | 46.70 | Cheyenne Mountain School District 12 / 22,131 |
| 133. | 47.00 | Walsh School District RE-1 / 1,070 |
| 133. | 47.00 | Delta County School District 50J / 31,037 |
| 135. | 47.10 | Dolores School District RE-4A / 3,631 |
| 136. | 47.20 | Norwood School District R-2J / 2,034 |
| 137. | 47.30 | Sierra Grande School District R-30 / 1,988 |
| 138. | 47.80 | Kim Reorganized School District 88 / 355 |
| 139. | 47.90 | Salida School District R-32 / 9,919 |
| 140. | 48.00 | Clear Creek School District RE-1 / 9,114 |
| 140. | 48.00 | Karval School District RE-23 / 292 |
| 142. | 48.10 | Mancos School District RE-6 / 3,300 |
| 143. | 48.30 | Otis School District R-3 / 796 |
| 144. | 48.60 | Woodland Park School District RE-2 / 18,197 |
| 144. | 48.60 | Edison School District 54-JT / 268 |
| 146. | 48.70 | Archuleta County School District 50-JT / 11,596 |
| 147. | 48.80 | Big Sandy School District 100J / 1,679 |
| 148. | 49.00 | Springfield School District RE-4 / 1,907 |
| 149. | 49.50 | Cripple Creek-Victor School District RE-1 / 5,166 |
| 150. | 49.60 | Arriba-Flagler School District C-20 / 1,080 |
| 150. | 49.60 | Buena Vista School District R-31 / 8,275 |
| 150. | 49.60 | Aguilar Reorganized School District 6 / 1,187 |
| 153. | 49.70 | Hi-Plains School District R-23 / 485 |
| 154. | 49.90 | Moffat Consolidated School District 2 / 1,526 |
| 154. | 49.90 | Miami-Yoder School District 60-JT / 1,661 |
| 156. | 50.10 | Ouray School District R-1 / 1,718 |
| 157. | 50.30 | Julesburg School District RE-1 / 1,547 |
| 157. | 50.30 | Genoa-Hugo School District C-113 / 1,210 |
| 157. | 50.30 | Gilpin County School District RE-1 / 2,928 |
| 160. | 50.50 | Park County School District RE-2 / 6,648 |
| 161. | 50.80 | Huerfano School District RE-1 / 5,135 |
| 162. | 51.40 | Weldon Valley School District RE-20J / 732 |
| 163. | 51.50 | West End School District RE-2 / 1,763 |
| 164. | 52.30 | Pawnee School District RE-12 / 536 |
| 165. | 52.60 | Primero Reorganized School District 2 / 1,178 |
| 166. | 52.90 | Ridgway School District R-2 / 2,395 |
| 167. | 53.20 | Pritchett School District RE-3 / 237 |
| 168. | 53.80 | Arickaree School District R-2 / 516 |
| 169. | 54.20 | Centennial School District R-1 / 1,590 |
| 170. | 54.50 | Mountain Valley School District RE-1 / 1,614 |
| 171. | 54.90 | Cotopaxi School District RE-3 / 3,025 |
| 172. | 56.40 | Park School District R-3 / 11,437 |
| 172. | 56.40 | Custer County School District C-1 / 3,825 |
| 174. | 57.20 | La Veta School District RE-2 / 1,415 |
| 175. | 57.50 | Hinsdale County School District RE-1 / 812 |
| 176. | 60.30 | Branson Reorganized School District 82 / 148 |
| 177. | 61.20 | Creede Consolidated School District 1 / 704 |
| 178. | 67.80 | Campo School District RE-6 / 179 |
Please note that we only rank locations with 'Median Age' data. The rank above might not be a complete list. Locations without 'Median Age' data are not listed.
