| Rank | Median Age ▲ | School District / Population |
| 1. | 25.70 | Fountain School District 8 / 30,129 |
| 2. | 29.00 | Harrison School District 2 / 66,847 |
| 3. | 29.90 | Greeley School District 6 / 112,663 |
| 4. | 30.00 | Adams County School District 14 / 35,567 |
| 5. | 31.40 | Adams-Arapahoe School District 28J / 204,199 |
| 6. | 31.60 | Garfield School District RE-2 / 23,918 |
| 6. | 31.60 | Alamosa School District RE-11J / 14,234 |
| 8. | 31.80 | Poudre School District R-1 / 179,859 |
| 9. | 32.00 | Falcon School District 49 / 69,880 |
| 10. | 32.10 | Wiley School District RE-13-JT / 1,041 |
| 11. | 32.30 | Mapleton School District 1 / 28,961 |
| 11. | 32.30 | Widefield School District 3 / 43,080 |
| 11. | 32.30 | Brighton School District 27J / 70,552 |
| 14. | 32.40 | Bethune School District R-5 / 545 |
| 15. | 32.70 | Gunnison Watershed School District RE-1J / 14,990 |
| 16. | 32.80 | Weld County School District RE-8 / 12,657 |
| 17. | 32.90 | Johnstown-Milliken School District RE-5J / 14,925 |
| 17. | 32.90 | Eagle County School District RE 50 / 41,689 |
| 17. | 32.90 | Wiggins School District RE-50J / 2,466 |
| 20. | 33.20 | Northglenn-Thornton School District 12 / 200,740 |
| 21. | 33.30 | Sheridan School District 2 / 7,959 |
| 22. | 33.60 | Strasburg School District 31J / 5,107 |
| 23. | 33.70 | Rangely School District RE-4 / 2,638 |
| 24. | 33.80 | Denver County School District 1 / 578,087 |
| 24. | 33.80 | Monte Vista School District C-8 / 6,945 |
| 26. | 34.10 | Windsor School District RE-4 / 19,665 |
| 26. | 34.10 | Westminster School District 50 / 69,912 |
| 26. | 34.10 | Academy School District 20 / 96,799 |
| 29. | 34.30 | Idalia School District RJ-3 / 555 |
| 29. | 34.30 | Ignacio School District 11-JT / 5,672 |
| 29. | 34.30 | Hanover School District 28 / 1,863 |
| 32. | 34.50 | Fort Morgan School District RE-3 / 16,911 |
| 33. | 34.60 | Lake County School District R-1 / 7,039 |
| 34. | 34.70 | Cheraw School District 31 / 605 |
| 35. | 34.80 | Center School District 26-JT / 3,775 |
| 36. | 34.90 | Pawnee School District RE-12 / 613 |
| 36. | 34.90 | Boulder Valley School District RE-2 / 210,986 |
| 38. | 35.00 | Ellicott School District 22 / 3,866 |
| 39. | 35.10 | Eaton School District RE-2 / 9,437 |
| 40. | 35.50 | Cherry Creek School District 5 / 257,871 |
| 41. | 35.60 | Garfield County School District 16 / 6,270 |
| 42. | 35.70 | West Grand School District 1-JT / 3,586 |
| 43. | 35.80 | Keenesburg School District RE-3J / 11,144 |
| 44. | 35.90 | Douglas County School District RE-1 / 275,900 |
| 44. | 35.90 | Stratton School District R-4 / 1,033 |
| 44. | 35.90 | Lamar School District RE-2 / 9,374 |
| 47. | 36.10 | Summit School District RE-1 / 26,947 |
| 47. | 36.10 | Ault-Highland School District RE-9 / 5,560 |
| 47. | 36.10 | Wray School District RD-2 / 4,080 |
| 47. | 36.10 | St. Vrain Valley School District RE 1J / 145,038 |
| 51. | 36.20 | Moffat County School District RE-1 / 13,519 |
| 52. | 36.50 | Englewood School District 1 / 25,674 |
| 52. | 36.50 | Roaring Fork School District RE-1 / 37,657 |
| 54. | 36.80 | Weld County School District RE-1 / 8,947 |
| 54. | 36.80 | Yuma School District 1 / 4,687 |
| 56. | 36.90 | Platte Valley School District RE-7 / 4,789 |
| 56. | 36.90 | Colorado Springs School District 11 / 221,148 |
| 56. | 36.90 | Pueblo City School District 60 / 108,431 |
| 59. | 37.00 | South Conejos School District RE-10 / 2,047 |
| 59. | 37.00 | Durango School District 9-R / 37,419 |
| 61. | 37.10 | Miami-Yoder School District 60-JT / 1,919 |
| 62. | 37.40 | Archuleta County School District 50-JT / 11,653 |
| 63. | 37.50 | Hoehne Reorganized School District 3 / 2,128 |
| 63. | 37.50 | Rocky Ford School District R-2 / 5,307 |
| 65. | 37.60 | Hayden School District RE-1 / 2,920 |
| 66. | 37.70 | Buffalo School District RE-4 / 889 |
| 67. | 37.80 | Granada School District RE-1 / 1,256 |
| 68. | 38.00 | Valley School District RE-1 / 19,776 |
| 69. | 38.10 | Telluride School District R-1 / 5,687 |
| 69. | 38.10 | Mesa County Valley School District 51 / 138,863 |
| 71. | 38.30 | Byers School District 32J / 2,280 |
| 72. | 38.50 | Sargent School District RE-33J / 1,081 |
| 73. | 38.60 | Crowley County School District RE-1-J / 5,590 |
| 74. | 38.80 | Steamboat Springs School District RE-2 / 16,165 |
| 74. | 38.80 | Burlington School District RE-6J / 5,272 |
| 74. | 38.80 | North Conejos School District RE-1J / 4,805 |
| 74. | 38.80 | Holyoke School District RE-1J / 2,932 |
| 78. | 39.20 | South Routt School District RE-3 / 3,721 |
| 79. | 39.30 | Brush School District RE-2J / 7,891 |
| 79. | 39.30 | Bennett School District 29-J / 5,683 |
| 81. | 39.40 | Limon School District RE-4J / 3,272 |
| 81. | 39.40 | Montezuma-Cortez School District RE-1 / 18,405 |
| 83. | 39.50 | Thompson School District R-2J / 100,255 |
| 83. | 39.50 | Swink School District 33 / 1,325 |
| 85. | 39.70 | Jefferson County School District R-1 / 530,782 |
| 85. | 39.70 | Florence School District RE-2 / 14,856 |
| 85. | 39.70 | Meeker School District RE1 / 3,856 |
| 88. | 39.80 | Peyton School District 23-JT / 3,584 |
| 89. | 40.00 | Las Animas School District RE-1 / 5,248 |
| 90. | 40.20 | Pritchett School District RE-3 / 359 |
| 91. | 40.50 | De Beque School District 49-JT / 803 |
| 91. | 40.50 | Manzanola School District 3J / 1,147 |
| 93. | 40.70 | Cheyenne County School District RE-5 / 1,647 |
| 94. | 40.80 | Pueblo County School District 70 / 47,531 |
| 95. | 41.00 | Karval School District RE-23 / 362 |
| 95. | 41.00 | Elbert School District 200 / 1,749 |
| 97. | 41.10 | Holly School District RE-3 / 1,238 |
| 98. | 41.20 | East Grand School District 2 / 11,173 |
| 99. | 41.30 | Lewis-Palmer School District 38 / 27,492 |
| 99. | 41.30 | Akron School District R-1 / 2,635 |
| 101. | 41.40 | East Otero School District R-1 / 8,608 |
| 102. | 41.50 | Edison School District 54-JT / 256 |
| 103. | 41.70 | Prairie School District RE-11 / 548 |
| 104. | 41.80 | Montrose County School District RE-1J / 37,696 |
| 105. | 42.00 | Kim Reorganized School District 88 / 392 |
| 105. | 42.00 | Norwood School District R-2J / 2,239 |
| 107. | 42.20 | Kiowa School District C-2 / 2,470 |
| 107. | 42.20 | Lone Star School District 101 / 195 |
| 107. | 42.20 | Plateau Valley School District 50 / 2,705 |
| 110. | 42.60 | Canon City School District RE-1 / 29,840 |
| 111. | 42.70 | Ridgway School District R-2 / 2,422 |
| 112. | 42.80 | Arickaree School District R-2 / 659 |
| 113. | 42.90 | Frenchman School District RE-3 / 971 |
| 113. | 42.90 | Aspen School District 1 / 12,331 |
| 113. | 42.90 | Elizabeth School District C-1 / 13,615 |
| 116. | 43.10 | Calhan School District RJ-1 / 3,192 |
| 117. | 43.20 | Platte Canyon School District 1 / 10,316 |
| 118. | 43.40 | Sierra Grande School District R-30 / 1,688 |
| 118. | 43.40 | Bayfield School District R-10-JT / 7,541 |
| 120. | 43.50 | Littleton School District 6 / 90,627 |
| 121. | 43.60 | Hi-Plains School District R-23 / 483 |
| 121. | 43.60 | Trinidad School District 1 / 10,456 |
| 123. | 43.80 | Cripple Creek-Victor School District RE-1 / 5,079 |
| 123. | 43.80 | Silverton School District 1 / 752 |
| 125. | 43.90 | Deer Trail School District 26J / 693 |
| 126. | 44.00 | Fowler School District R-4J / 2,420 |
| 126. | 44.00 | Dolores County School District RE-2 / 2,065 |
| 126. | 44.00 | Kit Carson School District R-1 / 547 |
| 129. | 44.20 | Salida School District R-32 / 9,595 |
| 130. | 44.70 | Clear Creek School District RE-1 / 9,088 |
| 131. | 45.00 | Delta County School District 50J / 31,170 |
| 132. | 45.10 | McClave School District RE-2 / 702 |
| 132. | 45.10 | Sanford School District 6J / 1,352 |
| 134. | 45.20 | Eads School District RE-1 / 1,345 |
| 135. | 45.30 | Branson Reorganized School District 82 / 211 |
| 136. | 45.40 | Big Sandy School District 100J / 1,822 |
| 137. | 45.50 | Del Norte School District C-7 / 3,483 |
| 138. | 45.70 | Agate School District 300 / 646 |
| 139. | 45.80 | Liberty School District J-4 / 599 |
| 140. | 45.90 | Weldon Valley School District RE-20J / 800 |
| 141. | 46.20 | West End School District RE-2 / 1,846 |
| 142. | 46.30 | Springfield School District RE-4 / 1,878 |
| 143. | 46.50 | Briggsdale School District RE-10 / 663 |
| 143. | 46.50 | North Park School District R-1 / 1,464 |
| 145. | 46.60 | Woodland Park School District RE-2 / 17,742 |
| 145. | 46.60 | Centennial School District R-1 / 1,848 |
| 145. | 46.60 | Haxtun School District RE-2J / 1,581 |
| 148. | 46.70 | Cheyenne Mountain School District 12 / 21,817 |
| 149. | 47.00 | Genoa-Hugo School District C-113 / 1,328 |
| 150. | 47.50 | Huerfano School District RE-1 / 5,581 |
| 150. | 47.50 | Plateau School District RE-5 / 667 |
| 150. | 47.50 | Woodlin School District R-104 / 294 |
| 153. | 47.60 | Manitou Springs School District 14 / 7,987 |
| 154. | 48.00 | Ouray School District R-1 / 1,669 |
| 155. | 48.20 | Gilpin County School District RE-1 / 2,585 |
| 155. | 48.20 | Buena Vista School District R-31 / 7,984 |
| 157. | 48.40 | Dolores School District RE-4A / 3,801 |
| 158. | 48.60 | Sangre de Cristo School District RE-22J / 1,218 |
| 158. | 48.60 | Vilas School District RE-5 / 168 |
| 160. | 49.00 | Park County School District RE-2 / 5,970 |
| 161. | 49.10 | Arriba-Flagler School District C-20 / 1,184 |
| 162. | 49.50 | Otis School District R-3 / 890 |
| 163. | 49.80 | Park School District R-3 / 11,900 |
| 164. | 50.00 | Primero Reorganized School District 2 / 1,370 |
| 165. | 50.40 | Platte Valley School District RE-3 / 757 |
| 165. | 50.40 | Walsh School District RE-1 / 1,165 |
| 167. | 50.60 | Mancos School District RE-6 / 3,073 |
| 168. | 51.00 | Julesburg School District RE-1 / 1,630 |
| 169. | 51.10 | Mountain Valley School District RE-1 / 1,310 |
| 170. | 52.10 | Custer County School District C-1 / 3,597 |
| 171. | 52.40 | Plainview School District RE-2 / 298 |
| 172. | 52.80 | Campo School District RE-6 / 263 |
| 173. | 53.10 | Moffat Consolidated School District 2 / 1,180 |
| 174. | 56.10 | Cotopaxi School District RE-3 / 2,706 |
| 175. | 56.30 | Aguilar Reorganized School District 6 / 1,118 |
| 176. | 57.40 | La Veta School District RE-2 / 1,367 |
| 177. | 57.60 | Hinsdale County School District RE-1 / 489 |
| 178. | 58.40 | Creede Consolidated School District 1 / 1,020 |
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.
