| Rank | Median Age ▲ | School District / Population |
| 1. | 25.40 | Fountain School District 8 / 31,699 |
| 2. | 28.20 | Harrison School District 2 / 72,218 |
| 3. | 29.80 | Greeley School District 6 / 114,372 |
| 4. | 29.90 | Adams County School District 14 / 36,462 |
| 5. | 31.30 | Widefield School District 3 / 45,935 |
| 6. | 31.70 | Adams-Arapahoe School District 28J / 206,430 |
| 7. | 31.90 | Mapleton School District 1 / 30,443 |
| 7. | 31.90 | Poudre School District R-1 / 184,648 |
| 9. | 32.10 | Falcon School District 49 / 73,502 |
| 10. | 32.20 | Alamosa School District RE-11J / 14,315 |
| 11. | 32.30 | Sheridan School District 2 / 8,029 |
| 12. | 32.60 | Brighton School District 27J / 77,537 |
| 13. | 32.70 | Rangely School District RE-4 / 2,800 |
| 14. | 32.90 | Center School District 26-JT / 3,299 |
| 15. | 33.20 | Garfield School District RE-2 / 25,009 |
| 16. | 33.30 | Westminster School District 50 / 70,290 |
| 16. | 33.30 | Sanford School District 6J / 1,366 |
| 18. | 33.40 | Northglenn-Thornton School District 12 / 209,792 |
| 19. | 33.60 | Johnstown-Milliken School District RE-5J / 16,550 |
| 19. | 33.60 | Fort Morgan School District RE-3 / 16,956 |
| 19. | 33.60 | Eagle County School District RE 50 / 44,055 |
| 22. | 33.70 | Denver County School District 1 / 600,158 |
| 23. | 34.30 | Gunnison Watershed School District RE-1J / 15,260 |
| 24. | 34.50 | Weld County School District RE-8 / 12,408 |
| 25. | 34.80 | Boulder Valley School District RE-2 / 212,161 |
| 26. | 35.00 | Lake County School District R-1 / 7,310 |
| 27. | 35.30 | Garfield County School District 16 / 5,935 |
| 28. | 35.60 | Cherry Creek School District 5 / 273,427 |
| 28. | 35.60 | Lamar School District RE-2 / 9,397 |
| 28. | 35.60 | Academy School District 20 / 97,718 |
| 28. | 35.60 | Granada School District RE-1 / 943 |
| 32. | 35.70 | Windsor School District RE-4 / 21,510 |
| 33. | 35.80 | Keenesburg School District RE-3J / 12,643 |
| 33. | 35.80 | Moffat County School District RE-1 / 13,795 |
| 35. | 36.40 | Summit School District RE-1 / 27,852 |
| 36. | 36.50 | Roaring Fork School District RE-1 / 37,655 |
| 37. | 36.60 | North Conejos School District RE-1J / 4,621 |
| 38. | 36.70 | Colorado Springs School District 11 / 227,196 |
| 38. | 36.70 | Douglas County School District RE-1 / 287,725 |
| 40. | 36.80 | Ellicott School District 22 / 4,323 |
| 40. | 36.80 | Stratton School District R-4 / 1,125 |
| 42. | 37.00 | Platte Valley School District RE-7 / 4,697 |
| 43. | 37.10 | Weld County School District RE-1 / 8,930 |
| 44. | 37.20 | Bethune School District R-5 / 534 |
| 45. | 37.30 | Plainview School District RE-2 / 295 |
| 46. | 37.40 | Idalia School District RJ-3 / 502 |
| 46. | 37.40 | St. Vrain Valley School District RE 1J / 151,981 |
| 48. | 37.50 | Eaton School District RE-2 / 9,648 |
| 48. | 37.50 | Wiggins School District RE-50J / 2,522 |
| 50. | 37.60 | Yuma School District 1 / 5,017 |
| 50. | 37.60 | Pueblo City School District 60 / 108,548 |
| 52. | 37.70 | Durango School District 9-R / 37,981 |
| 53. | 37.80 | Monte Vista School District C-8 / 6,468 |
| 54. | 37.90 | Englewood School District 1 / 25,078 |
| 54. | 37.90 | Limon School District RE-4J / 3,314 |
| 54. | 37.90 | Valley School District RE-1 / 20,247 |
| 57. | 38.00 | Mesa County Valley School District 51 / 143,321 |
| 58. | 38.10 | Hanover School District 28 / 1,651 |
| 59. | 38.20 | Hayden School District RE-1 / 2,828 |
| 60. | 38.30 | Telluride School District R-1 / 5,867 |
| 61. | 38.50 | Burlington School District RE-6J / 5,189 |
| 61. | 38.50 | Edison School District 54-JT / 325 |
| 63. | 38.60 | East Otero School District R-1 / 8,828 |
| 64. | 38.70 | Strasburg School District 31J / 4,796 |
| 65. | 38.90 | Steamboat Springs School District RE-2 / 17,453 |
| 65. | 38.90 | Crowley County School District RE-1-J / 5,643 |
| 67. | 39.00 | West Grand School District 1-JT / 3,046 |
| 67. | 39.00 | Ault-Highland School District RE-9 / 5,588 |
| 69. | 39.10 | South Routt School District RE-3 / 3,164 |
| 69. | 39.10 | Wray School District RD-2 / 3,958 |
| 71. | 39.50 | Las Animas School District RE-1 / 5,619 |
| 72. | 39.60 | Brush School District RE-2J / 8,114 |
| 73. | 39.80 | Deer Trail School District 26J / 896 |
| 74. | 40.10 | Sangre de Cristo School District RE-22J / 1,230 |
| 75. | 40.20 | Ignacio School District 11-JT / 5,485 |
| 76. | 40.30 | Sargent School District RE-33J / 1,047 |
| 76. | 40.30 | Jefferson County School District R-1 / 537,431 |
| 78. | 40.40 | Thompson School District R-2J / 104,236 |
| 79. | 40.50 | Pueblo County School District 70 / 50,231 |
| 79. | 40.50 | Vilas School District RE-5 / 239 |
| 79. | 40.50 | Hoehne Reorganized School District 3 / 2,201 |
| 79. | 40.50 | Byers School District 32J / 2,469 |
| 83. | 40.70 | Meeker School District RE1 / 3,859 |
| 83. | 40.70 | Manzanola School District 3J / 919 |
| 85. | 40.90 | Montezuma-Cortez School District RE-1 / 18,573 |
| 85. | 40.90 | Buffalo School District RE-4 / 999 |
| 85. | 40.90 | McClave School District RE-2 / 732 |
| 88. | 41.00 | Bayfield School District R-10-JT / 8,456 |
| 89. | 41.20 | Holyoke School District RE-1J / 3,159 |
| 89. | 41.20 | Florence School District RE-2 / 16,884 |
| 91. | 41.40 | Briggsdale School District RE-10 / 615 |
| 92. | 41.50 | Bennett School District 29-J / 6,203 |
| 92. | 41.50 | Miami-Yoder School District 60-JT / 2,196 |
| 94. | 41.70 | Aspen School District 1 / 13,015 |
| 95. | 41.80 | Trinidad School District 1 / 10,500 |
| 95. | 41.80 | Montrose County School District RE-1J / 38,721 |
| 97. | 41.90 | Calhan School District RJ-1 / 2,997 |
| 98. | 42.00 | East Grand School District 2 / 11,977 |
| 99. | 42.30 | Peyton School District 23-JT / 4,034 |
| 100. | 42.40 | De Beque School District 49-JT / 921 |
| 101. | 42.50 | Cheyenne County School District RE-5 / 1,354 |
| 102. | 42.60 | Holly School District RE-3 / 1,394 |
| 102. | 42.60 | Wiley School District RE-13-JT / 965 |
| 104. | 42.80 | Rocky Ford School District R-2 / 5,500 |
| 104. | 42.80 | Lewis-Palmer School District 38 / 28,766 |
| 106. | 43.20 | Cheraw School District 31 / 745 |
| 107. | 43.30 | Kit Carson School District R-1 / 482 |
| 107. | 43.30 | Big Sandy School District 100J / 1,845 |
| 109. | 43.40 | Arickaree School District R-2 / 629 |
| 110. | 43.50 | Swink School District 33 / 1,242 |
| 110. | 43.50 | Elizabeth School District C-1 / 14,249 |
| 110. | 43.50 | Norwood School District R-2J / 1,984 |
| 110. | 43.50 | Lone Star School District 101 / 255 |
| 114. | 43.60 | Littleton School District 6 / 91,871 |
| 114. | 43.60 | Elbert School District 200 / 1,554 |
| 114. | 43.60 | Otis School District R-3 / 876 |
| 117. | 43.80 | Kiowa School District C-2 / 2,595 |
| 117. | 43.80 | Silverton School District 1 / 699 |
| 119. | 44.00 | Canon City School District RE-1 / 27,601 |
| 120. | 44.30 | Fowler School District R-4J / 2,070 |
| 121. | 44.40 | South Conejos School District RE-10 / 2,241 |
| 122. | 44.50 | Frenchman School District RE-3 / 953 |
| 123. | 44.70 | Akron School District R-1 / 2,453 |
| 124. | 44.80 | Woodlin School District R-104 / 399 |
| 124. | 44.80 | Pritchett School District RE-3 / 303 |
| 126. | 45.20 | Dolores County School District RE-2 / 2,180 |
| 127. | 45.70 | Delta County School District 50J / 31,332 |
| 128. | 45.80 | Platte Canyon School District 1 / 9,244 |
| 129. | 45.90 | Mancos School District RE-6 / 3,226 |
| 129. | 45.90 | Plateau Valley School District 50 / 2,572 |
| 131. | 46.00 | Plateau School District RE-5 / 532 |
| 131. | 46.00 | Genoa-Hugo School District C-113 / 1,348 |
| 133. | 46.10 | Woodland Park School District RE-2 / 18,546 |
| 133. | 46.10 | Del Norte School District C-7 / 4,132 |
| 133. | 46.10 | West End School District RE-2 / 2,123 |
| 136. | 46.30 | Haxtun School District RE-2J / 1,470 |
| 136. | 46.30 | Karval School District RE-23 / 326 |
| 138. | 46.50 | Weldon Valley School District RE-20J / 870 |
| 139. | 46.60 | Clear Creek School District RE-1 / 9,088 |
| 140. | 46.90 | Cheyenne Mountain School District 12 / 21,339 |
| 140. | 46.90 | Buena Vista School District R-31 / 8,659 |
| 142. | 47.10 | Branson Reorganized School District 82 / 173 |
| 142. | 47.10 | Manitou Springs School District 14 / 8,224 |
| 144. | 47.30 | Pawnee School District RE-12 / 522 |
| 144. | 47.30 | North Park School District R-1 / 1,394 |
| 144. | 47.30 | Hinsdale County School District RE-1 / 813 |
| 147. | 47.40 | Arriba-Flagler School District C-20 / 1,141 |
| 148. | 47.50 | Walsh School District RE-1 / 994 |
| 148. | 47.50 | Springfield School District RE-4 / 1,998 |
| 148. | 47.50 | Liberty School District J-4 / 507 |
| 151. | 47.70 | Ouray School District R-1 / 1,694 |
| 152. | 47.80 | Salida School District R-32 / 9,292 |
| 153. | 48.10 | Hi-Plains School District R-23 / 570 |
| 154. | 48.20 | Archuleta County School District 50-JT / 11,526 |
| 155. | 48.40 | Park County School District RE-2 / 6,962 |
| 156. | 48.70 | Gilpin County School District RE-1 / 2,763 |
| 157. | 48.80 | Eads School District RE-1 / 1,103 |
| 157. | 48.80 | Agate School District 300 / 663 |
| 159. | 48.90 | Sierra Grande School District R-30 / 1,634 |
| 159. | 48.90 | Julesburg School District RE-1 / 1,530 |
| 161. | 49.10 | Centennial School District R-1 / 1,890 |
| 162. | 49.50 | Platte Valley School District RE-3 / 830 |
| 162. | 49.50 | Dolores School District RE-4A / 3,736 |
| 164. | 49.60 | Prairie School District RE-11 / 393 |
| 165. | 49.80 | Mountain Valley School District RE-1 / 1,366 |
| 166. | 50.60 | Cripple Creek-Victor School District RE-1 / 4,804 |
| 167. | 51.00 | Kim Reorganized School District 88 / 308 |
| 168. | 51.10 | Huerfano School District RE-1 / 5,403 |
| 168. | 51.10 | Aguilar Reorganized School District 6 / 1,172 |
| 170. | 51.30 | Ridgway School District R-2 / 2,391 |
| 171. | 52.40 | Moffat Consolidated School District 2 / 1,572 |
| 172. | 52.50 | Park School District R-3 / 11,493 |
| 173. | 53.10 | Creede Consolidated School District 1 / 712 |
| 174. | 53.30 | Campo School District RE-6 / 254 |
| 174. | 53.30 | Custer County School District C-1 / 3,915 |
| 176. | 54.10 | Primero Reorganized School District 2 / 1,153 |
| 177. | 54.30 | La Veta School District RE-2 / 1,308 |
| 178. | 55.40 | Cotopaxi School District RE-3 / 2,735 |
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.
