| Rank | Median Age ▲ | School District / Population |
| 1. | 22.00 | Archuleta County School District 50-JT / 12,091 |
| 2. | 25.50 | Fountain School District 8 / 29,183 |
| 3. | 29.30 | Harrison School District 2 / 66,824 |
| 4. | 29.40 | Greeley School District 6 / 113,037 |
| 5. | 30.00 | Adams County School District 14 / 34,433 |
| 6. | 30.30 | Alamosa School District RE-11J / 14,335 |
| 6. | 30.30 | Center School District 26-JT / 4,214 |
| 8. | 30.40 | Gunnison Watershed School District RE-1J / 14,875 |
| 9. | 30.80 | Poudre School District R-1 / 175,331 |
| 10. | 31.40 | Idalia School District RJ-3 / 541 |
| 11. | 31.70 | Adams-Arapahoe School District 28J / 200,363 |
| 11. | 31.70 | Garfield School District RE-2 / 22,653 |
| 13. | 32.00 | Mapleton School District 1 / 28,620 |
| 14. | 32.10 | Wiley School District RE-13-JT / 1,066 |
| 14. | 32.10 | Weld County School District RE-8 / 12,572 |
| 14. | 32.10 | Brighton School District 27J / 66,528 |
| 17. | 32.20 | Falcon School District 49 / 65,199 |
| 17. | 32.20 | Eagle County School District RE 50 / 40,734 |
| 19. | 32.30 | Sheridan School District 2 / 8,085 |
| 19. | 32.30 | Windsor School District RE-4 / 19,273 |
| 21. | 32.40 | Pawnee School District RE-12 / 605 |
| 22. | 32.70 | Widefield School District 3 / 41,104 |
| 22. | 32.70 | Northglenn-Thornton School District 12 / 199,049 |
| 22. | 32.70 | Granada School District RE-1 / 1,457 |
| 25. | 32.90 | Strasburg School District 31J / 4,958 |
| 25. | 32.90 | Summit School District RE-1 / 26,068 |
| 27. | 33.30 | Denver County School District 1 / 582,447 |
| 28. | 33.40 | Westminster School District 50 / 67,470 |
| 29. | 33.50 | Johnstown-Milliken School District RE-5J / 15,592 |
| 30. | 33.80 | Ault-Highland School District RE-9 / 5,524 |
| 31. | 33.90 | Fort Morgan School District RE-3 / 16,291 |
| 32. | 34.30 | Ellicott School District 22 / 4,021 |
| 33. | 34.40 | Boulder Valley School District RE-2 / 213,825 |
| 33. | 34.40 | Lake County School District R-1 / 8,025 |
| 35. | 34.60 | Academy School District 20 / 93,426 |
| 36. | 34.70 | Eaton School District RE-2 / 8,814 |
| 36. | 34.70 | Wiggins School District RE-50J / 2,607 |
| 36. | 34.70 | Rangely School District RE-4 / 2,514 |
| 39. | 34.80 | Weld County School District RE-1 / 9,063 |
| 40. | 35.10 | Cherry Creek School District 5 / 253,876 |
| 40. | 35.10 | Hanover School District 28 / 1,812 |
| 42. | 35.20 | Garfield County School District 16 / 6,190 |
| 43. | 35.50 | Douglas County School District RE-1 / 271,488 |
| 44. | 35.60 | St. Vrain Valley School District RE 1J / 146,669 |
| 45. | 35.70 | Monte Vista School District C-8 / 6,809 |
| 46. | 35.80 | Ignacio School District 11-JT / 5,335 |
| 47. | 36.00 | West Grand School District 1-JT / 3,883 |
| 47. | 36.00 | Keenesburg School District RE-3J / 10,647 |
| 47. | 36.00 | Hayden School District RE-1 / 2,913 |
| 50. | 36.10 | Roaring Fork School District RE-1 / 38,314 |
| 50. | 36.10 | Telluride School District R-1 / 5,738 |
| 50. | 36.10 | Lamar School District RE-2 / 9,539 |
| 53. | 36.20 | Durango School District 9-R / 37,490 |
| 53. | 36.20 | Moffat County School District RE-1 / 13,555 |
| 55. | 36.40 | Buffalo School District RE-4 / 1,042 |
| 55. | 36.40 | Crowley County School District RE-1-J / 6,000 |
| 57. | 36.80 | Pueblo City School District 60 / 106,044 |
| 58. | 37.00 | Colorado Springs School District 11 / 219,875 |
| 59. | 37.10 | Hoehne Reorganized School District 3 / 2,169 |
| 60. | 37.20 | Sanford School District 6J / 1,447 |
| 60. | 37.20 | Platte Valley School District RE-7 / 4,582 |
| 60. | 37.20 | South Routt School District RE-3 / 3,670 |
| 63. | 37.30 | Cheraw School District 31 / 658 |
| 64. | 37.40 | Steamboat Springs School District RE-2 / 15,714 |
| 64. | 37.40 | Englewood School District 1 / 26,468 |
| 66. | 37.60 | Holly School District RE-3 / 1,291 |
| 66. | 37.60 | Rocky Ford School District R-2 / 5,380 |
| 68. | 37.70 | Montezuma-Cortez School District RE-1 / 18,611 |
| 69. | 37.80 | Burlington School District RE-6J / 5,039 |
| 70. | 38.00 | Mesa County Valley School District 51 / 134,554 |
| 70. | 38.00 | Valley School District RE-1 / 18,007 |
| 70. | 38.00 | Bethune School District R-5 / 580 |
| 73. | 38.10 | Holyoke School District RE-1J / 3,009 |
| 74. | 38.20 | Pritchett School District RE-3 / 374 |
| 74. | 38.20 | North Conejos School District RE-1J / 4,548 |
| 76. | 38.60 | Wray School District RD-2 / 3,995 |
| 76. | 38.60 | Byers School District 32J / 2,383 |
| 76. | 38.60 | Miami-Yoder School District 60-JT / 1,958 |
| 79. | 38.80 | Meeker School District RE1 / 3,669 |
| 79. | 38.80 | Florence School District RE-2 / 18,274 |
| 81. | 38.90 | Peyton School District 23-JT / 3,933 |
| 82. | 39.00 | Thompson School District R-2J / 100,026 |
| 83. | 39.10 | Las Animas School District RE-1 / 5,269 |
| 84. | 39.30 | Calhan School District RJ-1 / 3,270 |
| 84. | 39.30 | Fowler School District R-4J / 2,169 |
| 86. | 39.40 | Yuma School District 1 / 4,516 |
| 87. | 39.50 | Jefferson County School District R-1 / 530,965 |
| 87. | 39.50 | Branson Reorganized School District 82 / 248 |
| 89. | 39.60 | Deer Trail School District 26J / 969 |
| 89. | 39.60 | Bennett School District 29-J / 5,951 |
| 91. | 39.70 | Brush School District RE-2J / 8,060 |
| 92. | 39.90 | Pueblo County School District 70 / 47,483 |
| 93. | 40.50 | Limon School District RE-4J / 3,309 |
| 93. | 40.50 | Lewis-Palmer School District 38 / 26,066 |
| 93. | 40.50 | East Grand School District 2 / 10,059 |
| 96. | 40.70 | Elbert School District 200 / 1,614 |
| 97. | 40.90 | Stratton School District R-4 / 1,068 |
| 98. | 41.00 | McClave School District RE-2 / 712 |
| 98. | 41.00 | Montrose County School District RE-1J / 36,892 |
| 98. | 41.00 | De Beque School District 49-JT / 844 |
| 101. | 41.10 | Manzanola School District 3J / 1,174 |
| 102. | 41.20 | Trinidad School District 1 / 10,304 |
| 103. | 41.30 | Karval School District RE-23 / 351 |
| 104. | 41.40 | Swink School District 33 / 1,311 |
| 104. | 41.40 | Kiowa School District C-2 / 2,530 |
| 106. | 41.50 | Kim Reorganized School District 88 / 496 |
| 107. | 42.10 | Elizabeth School District C-1 / 13,934 |
| 108. | 42.20 | Arickaree School District R-2 / 665 |
| 109. | 42.30 | Plainview School District RE-2 / 372 |
| 110. | 42.60 | Otis School District R-3 / 944 |
| 111. | 42.80 | Platte Canyon School District 1 / 11,048 |
| 112. | 43.10 | East Otero School District R-1 / 8,718 |
| 112. | 43.10 | Sargent School District RE-33J / 1,231 |
| 114. | 43.20 | Big Sandy School District 100J / 1,822 |
| 114. | 43.20 | Salida School District R-32 / 8,830 |
| 114. | 43.20 | Aspen School District 1 / 10,627 |
| 114. | 43.20 | Bayfield School District R-10-JT / 7,156 |
| 118. | 43.80 | Canon City School District RE-1 / 27,062 |
| 119. | 43.90 | Littleton School District 6 / 91,930 |
| 119. | 43.90 | Clear Creek School District RE-1 / 8,886 |
| 121. | 44.00 | Norwood School District R-2J / 2,114 |
| 121. | 44.00 | South Conejos School District RE-10 / 1,967 |
| 123. | 44.10 | Prairie School District RE-11 / 600 |
| 123. | 44.10 | Cheyenne County School District RE-5 / 1,303 |
| 125. | 44.30 | Plateau Valley School District 50 / 2,583 |
| 125. | 44.30 | Akron School District R-1 / 2,519 |
| 125. | 44.30 | Dolores County School District RE-2 / 1,805 |
| 125. | 44.30 | Gilpin County School District RE-1 / 2,859 |
| 129. | 44.50 | Huerfano School District RE-1 / 6,252 |
| 129. | 44.50 | Woodlin School District R-104 / 286 |
| 131. | 44.60 | Delta County School District 50J / 30,731 |
| 132. | 44.70 | Cripple Creek-Victor School District RE-1 / 4,358 |
| 133. | 45.20 | Weldon Valley School District RE-20J / 932 |
| 134. | 45.30 | Edison School District 54-JT / 237 |
| 134. | 45.30 | Ouray School District R-1 / 1,770 |
| 134. | 45.30 | Vilas School District RE-5 / 165 |
| 137. | 45.40 | Ridgway School District R-2 / 2,442 |
| 137. | 45.40 | Genoa-Hugo School District C-113 / 1,214 |
| 139. | 45.50 | Silverton School District 1 / 686 |
| 140. | 45.60 | Briggsdale School District RE-10 / 650 |
| 140. | 45.60 | Frenchman School District RE-3 / 1,079 |
| 142. | 45.70 | Haxtun School District RE-2J / 1,677 |
| 143. | 46.00 | Woodland Park School District RE-2 / 17,196 |
| 143. | 46.00 | Liberty School District J-4 / 506 |
| 145. | 46.20 | Sangre de Cristo School District RE-22J / 1,268 |
| 145. | 46.20 | Cheyenne Mountain School District 12 / 21,234 |
| 147. | 46.30 | Arriba-Flagler School District C-20 / 1,228 |
| 148. | 46.40 | West End School District RE-2 / 2,096 |
| 149. | 46.70 | Mountain Valley School District RE-1 / 1,340 |
| 149. | 46.70 | Sierra Grande School District R-30 / 1,637 |
| 151. | 47.10 | Manitou Springs School District 14 / 8,286 |
| 151. | 47.10 | Del Norte School District C-7 / 3,484 |
| 153. | 47.20 | Springfield School District RE-4 / 1,883 |
| 154. | 47.30 | Platte Valley School District RE-3 / 724 |
| 155. | 47.40 | Park County School District RE-2 / 5,740 |
| 156. | 47.70 | Agate School District 300 / 771 |
| 157. | 47.80 | Plateau School District RE-5 / 693 |
| 158. | 47.90 | Campo School District RE-6 / 349 |
| 159. | 48.00 | Buena Vista School District R-31 / 8,133 |
| 160. | 48.90 | Hinsdale County School District RE-1 / 385 |
| 161. | 49.30 | Moffat Consolidated School District 2 / 1,226 |
| 162. | 49.60 | Walsh School District RE-1 / 1,076 |
| 163. | 49.70 | Primero Reorganized School District 2 / 1,433 |
| 164. | 49.80 | Mancos School District RE-6 / 2,799 |
| 165. | 50.10 | North Park School District R-1 / 1,305 |
| 166. | 50.20 | Kit Carson School District R-1 / 319 |
| 166. | 50.20 | Custer County School District C-1 / 3,265 |
| 168. | 50.30 | La Veta School District RE-2 / 1,461 |
| 169. | 50.40 | Park School District R-3 / 12,426 |
| 170. | 50.50 | Lone Star School District 101 / 158 |
| 171. | 50.90 | Julesburg School District RE-1 / 1,638 |
| 172. | 51.50 | Dolores School District RE-4A / 3,590 |
| 173. | 52.50 | Eads School District RE-1 / 1,272 |
| 174. | 52.80 | Centennial School District R-1 / 1,645 |
| 174. | 52.80 | Hi-Plains School District R-23 / 432 |
| 176. | 52.90 | Cotopaxi School District RE-3 / 2,513 |
| 177. | 55.60 | Aguilar Reorganized School District 6 / 1,164 |
| 178. | 59.00 | Creede Consolidated School District 1 / 1,077 |
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.
*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.
