| Rank | Median Age ▲ | School District / Population |
| 1. | 23.20 | Knob Noster R-VIII School District / 9,324 |
| 2. | 23.80 | Waynesville R-VI Schools / 36,601 |
| 3. | 24.20 | Maryville R-II Schools / 15,779 |
| 4. | 24.50 | Mirabile C-1 School District / 588 |
| 5. | 24.70 | Tri-County R-VII School District / 2,060 |
| 6. | 25.00 | Moniteau County R-V School District / 1,208 |
| 7. | 25.90 | Warrensburg R-VI School District / 25,404 |
| 8. | 27.50 | Kirksville R-III School District / 21,566 |
| 9. | 28.20 | Columbia Public Schools / 137,146 |
| 10. | 28.60 | Canton School District / 4,343 |
| 11. | 29.00 | Gorin R-III School District / 490 |
| 12. | 29.80 | Clayton School District / 18,608 |
| 13. | 30.30 | Seymour R-II School District / 6,701 |
| 14. | 30.50 | Rolla 31 School District / 30,414 |
| 15. | 30.60 | Leopold R-III School District / 1,102 |
| 16. | 32.10 | La Monte R-IV School District / 2,041 |
| 16. | 32.10 | Cape Girardeau 63 School District / 38,265 |
| 18. | 32.20 | Riverview Gardens School District / 39,929 |
| 19. | 32.30 | Kirbyville R-VI School District / 2,598 |
| 20. | 32.60 | Webb City R-VII School District / 21,449 |
| 20. | 32.60 | Grain Valley R-V School District / 16,927 |
| 22. | 32.80 | Hickman Mills C-1 School District / 48,989 |
| 23. | 32.90 | Monett R-I School District / 13,041 |
| 23. | 32.90 | Crystal City 47 School District / 3,893 |
| 25. | 33.30 | Avilla R-XIII School District / 1,392 |
| 26. | 33.50 | High Point R-III School District / 760 |
| 26. | 33.50 | Crocker School District / 3,163 |
| 26. | 33.50 | Plato R-V School District / 4,545 |
| 26. | 33.50 | Clever R-V School District / 5,708 |
| 30. | 33.70 | Exeter R-VI School District / 2,181 |
| 31. | 33.80 | Norwood R-I School District / 2,463 |
| 31. | 33.80 | Willard School District / 23,457 |
| 33. | 33.90 | Bolivar R-I School District / 15,522 |
| 33. | 33.90 | Troy R-III School District / 33,092 |
| 35. | 34.00 | St. Louis City School District / 318,527 |
| 36. | 34.20 | New Bloomfield R-III School District / 4,785 |
| 36. | 34.20 | Wentzville R-IV School District / 70,180 |
| 38. | 34.50 | Kansas City School District / 191,819 |
| 38. | 34.50 | Liberty Schools / 53,149 |
| 40. | 34.60 | Middle Grove C-1 School District / 775 |
| 40. | 34.60 | South Pemiscot Schools / 3,727 |
| 40. | 34.60 | Hardin-Central C-2 School District / 1,051 |
| 40. | 34.60 | East Newton County R-VI School District / 9,702 |
| 44. | 34.70 | Marshall School District / 15,163 |
| 45. | 34.80 | Fort Osage R-I School District / 25,935 |
| 45. | 34.80 | Jennings School District / 17,386 |
| 45. | 34.80 | Sullivan School District / 12,158 |
| 48. | 34.90 | Belton 124 School District / 26,423 |
| 48. | 34.90 | Richards R-V School District / 3,541 |
| 48. | 34.90 | Scott City R-I School District / 5,416 |
| 48. | 34.90 | Normandy School District / 37,812 |
| 52. | 35.00 | Dunklin R-V School District / 9,928 |
| 52. | 35.00 | Adair County R-II School District / 1,725 |
| 52. | 35.00 | Springfield School District / 205,489 |
| 52. | 35.00 | Platte County R-III School District / 22,544 |
| 56. | 35.10 | Jefferson C-123 School District / 942 |
| 56. | 35.10 | Maysville R-I School District / 4,105 |
| 56. | 35.10 | Oak Grove R-VI School District / 11,163 |
| 56. | 35.10 | Hume R-VIII School District / 795 |
| 56. | 35.10 | East Prairie R-II School District / 5,722 |
| 61. | 35.20 | Dadeville R-II School District / 1,018 |
| 62. | 35.30 | Fayette R-III School District / 4,850 |
| 63. | 35.40 | Carthage R-IX School District / 23,106 |
| 63. | 35.40 | Grundy County R-V School District / 1,082 |
| 65. | 35.50 | Iberia R-V School District / 4,879 |
| 65. | 35.50 | Windsor C-1 School District / 17,243 |
| 65. | 35.50 | Sunrise R-IX School District / 3,721 |
| 65. | 35.50 | Ritenour School District / 44,541 |
| 69. | 35.70 | Osage County R-II School District / 5,177 |
| 69. | 35.70 | Maplewood-Richmond Heights School District / 14,395 |
| 69. | 35.70 | Valley Park School District / 8,257 |
| 72. | 35.90 | Pleasant Hope R-VI School District / 5,073 |
| 72. | 35.90 | Neosho R-5 School District / 26,798 |
| 72. | 35.90 | St. Joseph School District / 80,601 |
| 72. | 35.90 | New Haven School District / 2,622 |
| 72. | 35.90 | Southwest R-V School District / 4,722 |
| 72. | 35.90 | Central R-III School District / 11,575 |
| 72. | 35.90 | Sturgeon R-V School District / 3,082 |
| 79. | 36.00 | St. Charles R-VI School District / 53,651 |
| 79. | 36.00 | Fulton School District / 18,984 |
| 79. | 36.00 | Caruthersville School District / 6,055 |
| 79. | 36.00 | Pike County R-III School District / 3,063 |
| 79. | 36.00 | Ozark R-VI School District / 29,422 |
| 79. | 36.00 | Nixa School District / 28,598 |
| 85. | 36.10 | Otterville R-VI School District / 1,678 |
| 85. | 36.10 | Republic School District / 23,032 |
| 85. | 36.10 | Cooter R-IV School District / 888 |
| 85. | 36.10 | Joplin R-VIII School District / 58,962 |
| 89. | 36.20 | Scott County R-IV School District / 6,128 |
| 89. | 36.20 | Grandview C-4 School District / 31,233 |
| 91. | 36.30 | Livingston County R-III School District / 727 |
| 92. | 36.40 | McDonald County R-I School District / 18,505 |
| 92. | 36.40 | North Wood R-IV School District / 2,337 |
| 94. | 36.50 | Lee's Summit R-7 School District / 91,105 |
| 94. | 36.50 | Lafayette County C-1 School District / 6,502 |
| 94. | 36.50 | Pettis County R-V School District / 2,028 |
| 94. | 36.50 | Sedalia 200 School District / 29,946 |
| 98. | 36.60 | Lawson R-XIV School District / 6,005 |
| 98. | 36.60 | Prairie Home R-V School District / 1,312 |
| 98. | 36.60 | Meadville R-IV School District / 1,317 |
| 101. | 36.70 | Fox C-6 School District / 69,452 |
| 101. | 36.70 | Carl Junction R-I School District / 15,882 |
| 101. | 36.70 | Cooper County C-4 School District / 873 |
| 101. | 36.70 | Cole County R-I School District / 4,177 |
| 105. | 36.80 | Ferguson-Florissant School District / 69,422 |
| 105. | 36.80 | North Kansas City School District / 122,939 |
| 105. | 36.80 | Howell Valley R-I School District / 2,506 |
| 105. | 36.80 | Moberly School District / 16,265 |
| 109. | 36.90 | University City School District / 35,920 |
| 109. | 36.90 | North Andrew County R-VI School District / 1,738 |
| 109. | 36.90 | Mountain Grove R-III School District / 8,944 |
| 112. | 37.00 | East Carter County R-II School District / 4,453 |
| 113. | 37.10 | Bronaugh R-VII School District / 1,677 |
| 113. | 37.10 | Moniteau County C-1 School District / 1,362 |
| 113. | 37.10 | West St. Francis County R-IV School District / 6,054 |
| 113. | 37.10 | Laredo R-VII School District / 511 |
| 113. | 37.10 | North Pemiscot County R-I School District / 1,887 |
| 118. | 37.20 | Fort Zumwalt R-II School District / 111,105 |
| 118. | 37.20 | Pleasant Hill R-III School District / 10,492 |
| 120. | 37.30 | North Nodaway County R-VI School District / 1,354 |
| 120. | 37.30 | Delta R-V School District / 2,486 |
| 122. | 37.40 | Blue Springs R-IV School District / 76,446 |
| 122. | 37.40 | Elsberry R-II School District / 4,850 |
| 122. | 37.40 | Brentwood School District / 8,108 |
| 122. | 37.40 | St. Charles County R-V School District / 10,902 |
| 126. | 37.50 | Jefferson City Public Schools / 72,160 |
| 126. | 37.50 | Holliday C-2 School District / 544 |
| 126. | 37.50 | Northeast Randolph County R-IV School District / 1,947 |
| 126. | 37.50 | Sherwood Cass R-VIII School District / 5,142 |
| 126. | 37.50 | Aurora R-8 School District / 10,752 |
| 126. | 37.50 | Lathrop R-II School District / 4,931 |
| 132. | 37.60 | Cowgill R-VI School District / 370 |
| 132. | 37.60 | Fair Grove R-10 School District / 6,029 |
| 132. | 37.60 | Hazelwood School District / 119,980 |
| 132. | 37.60 | Hancock Place School District / 8,154 |
| 132. | 37.60 | Kennett 39 School District / 11,274 |
| 137. | 37.70 | Bernie School District / 3,284 |
| 137. | 37.70 | Northwestern R-I School District / 1,057 |
| 139. | 37.80 | Lebanon School District / 25,020 |
| 139. | 37.80 | De Soto School District / 17,664 |
| 141. | 37.90 | Boonville School District / 11,386 |
| 141. | 37.90 | Senath-Hornersville C-8 School District / 4,693 |
| 141. | 37.90 | Hollister R-V School District / 10,982 |
| 141. | 37.90 | Park Hill School District / 62,870 |
| 141. | 37.90 | West Plains R-VII School District / 13,294 |
| 141. | 37.90 | Milan C-2 School District / 3,781 |
| 141. | 37.90 | Cole County R-II School District / 6,040 |
| 148. | 38.00 | Union R-XI School District / 20,456 |
| 148. | 38.00 | Center 58 School District / 26,591 |
| 148. | 38.00 | Richwoods R-VII School District / 1,908 |
| 148. | 38.00 | Green Ridge R-VIII School District / 2,429 |
| 152. | 38.10 | Cass County R-V School District / 2,915 |
| 152. | 38.10 | Northeast Nodaway County R-V School District / 1,533 |
| 154. | 38.20 | Festus R-6 School District / 16,863 |
| 154. | 38.20 | Licking School District / 6,462 |
| 154. | 38.20 | Scott County Central Schools / 1,877 |
| 157. | 38.30 | Bowling Green R-I School District / 11,653 |
| 157. | 38.30 | Van-Far School District / 5,688 |
| 157. | 38.30 | Pilot Grove C-4 School District / 1,955 |
| 160. | 38.50 | Hayti R-II School District / 3,666 |
| 160. | 38.50 | Northwest R-I School District / 44,597 |
| 160. | 38.50 | Adrian County R-III School District / 4,417 |
| 163. | 38.60 | Sikeston School District / 20,625 |
| 163. | 38.60 | Hannibal School District / 22,478 |
| 163. | 38.60 | Boone County R-IV School District / 7,344 |
| 163. | 38.60 | Shelby County C-1 School District / 2,334 |
| 163. | 38.60 | Laclede County C-5 School District / 3,933 |
| 168. | 38.70 | North St. Francis County R-I School District / 20,784 |
| 168. | 38.70 | Adair County R-I School District / 2,029 |
| 168. | 38.70 | La Plata R-II School District / 2,672 |
| 171. | 38.80 | Jackson R-II School District / 29,857 |
| 171. | 38.80 | Harrisburg R-VIII School District / 3,166 |
| 171. | 38.80 | Laquey R-V School District / 3,679 |
| 174. | 38.90 | Farmington R-7 School District / 27,513 |
| 174. | 38.90 | Hale R-I School District / 1,103 |
| 174. | 38.90 | Meramec Valley R-III School District / 22,389 |
| 174. | 38.90 | Perry County 32 School District / 17,825 |
| 178. | 39.00 | Webster Groves School District / 31,361 |
| 178. | 39.00 | North Callaway R-I School District / 6,412 |
| 178. | 39.00 | Portageville School District / 4,314 |
| 178. | 39.00 | Sparta R-III School District / 4,097 |
| 182. | 39.10 | Mount Vernon R-V School District / 9,422 |
| 182. | 39.10 | Marion County Early R-V School District / 4,935 |
| 182. | 39.10 | Winfield School District / 10,146 |
| 182. | 39.10 | Winona R-III School District / 2,632 |
| 182. | 39.10 | Moniteau County R-I School District / 7,167 |
| 187. | 39.20 | Kingsville R-I School District / 2,082 |
| 187. | 39.20 | Braymer C-4 School District / 1,849 |
| 187. | 39.20 | Raymore-Peculiar R-II School District / 32,854 |
| 187. | 39.20 | Kearney R-I School District / 18,325 |
| 191. | 39.30 | Crawford County R-2 School District / 9,088 |
| 191. | 39.30 | Bradleyville R-I School District / 1,110 |
| 191. | 39.30 | Kingston K-14 School District / 5,271 |
| 191. | 39.30 | South Harrison School District / 5,696 |
| 191. | 39.30 | St. Clair R-XIII School District / 12,015 |
| 191. | 39.30 | Affton School District / 26,715 |
| 197. | 39.40 | Centralia R-VI School District / 7,647 |
| 197. | 39.40 | Wellington-Napoleon R-IX School District / 2,607 |
| 197. | 39.40 | Francis Howell School District / 113,474 |
| 197. | 39.40 | Raytown C-2 School District / 58,840 |
| 197. | 39.40 | Buchanan County R-IV School District / 1,950 |
| 202. | 39.50 | Moniteau County R-VI School District / 4,795 |
| 202. | 39.50 | Odessa R-VII School District / 12,195 |
| 202. | 39.50 | Richmond R-XVI School District / 10,101 |
| 205. | 39.60 | Clarksburg C-2 School District / 776 |
| 205. | 39.60 | Clarkton C-4 School District / 1,716 |
| 205. | 39.60 | Halfway R-III School District / 2,374 |
| 205. | 39.60 | Davis R-XII School District / 439 |
| 205. | 39.60 | Poplar Bluff R-I School District / 32,028 |
| 210. | 39.70 | Sheldon R-VIII School District / 1,212 |
| 210. | 39.70 | Liberal R-II School District / 2,923 |
| 210. | 39.70 | Marshfield R-I School District / 17,321 |
| 210. | 39.70 | Washington School District / 31,504 |
| 214. | 39.80 | Independence Public Schools / 93,667 |
| 214. | 39.80 | Drexel R-IV School District / 2,104 |
| 214. | 39.80 | Mountain View-Birch Tree R-III School District / 7,261 |
| 214. | 39.80 | Warren County R-III School District / 18,925 |
| 214. | 39.80 | Wright City R-II School District / 10,645 |
| 214. | 39.80 | Shawnee R-III School District / 744 |
| 220. | 39.90 | Scott County R-II School District / 3,820 |
| 220. | 39.90 | Nevada R-V School District / 15,276 |
| 220. | 39.90 | Miller R-II School District / 3,951 |
| 220. | 39.90 | Breckenridge R-I School District / 543 |
| 220. | 39.90 | Hurley R-I School District / 1,782 |
| 225. | 40.00 | Gallatin R-V School District / 3,310 |
| 225. | 40.00 | Revere C-3 School District / 668 |
| 225. | 40.00 | Holcomb R-III School District / 2,395 |
| 225. | 40.00 | Smithville School District / 11,225 |
| 229. | 40.10 | Marquand-Zion School District / 1,431 |
| 229. | 40.10 | Southland School District / 2,206 |
| 229. | 40.10 | Golden City School District / 1,873 |
| 229. | 40.10 | Harrisonville R-IX School District / 14,183 |
| 233. | 40.20 | Jefferson County R-VII School District / 5,957 |
| 233. | 40.20 | Mexico 59 School District / 15,119 |
| 233. | 40.20 | Spickard R-II School District / 566 |
| 233. | 40.20 | Strain-Japan R-XVI School District / 882 |
| 233. | 40.20 | Fordland R-III School District / 3,848 |
| 238. | 40.30 | Branson R-IV School District / 26,412 |
| 238. | 40.30 | Southern Boone County R-I School District / 8,399 |
| 238. | 40.30 | Scotland County R-I School District / 4,377 |
| 238. | 40.30 | Schuyler County R-I School District / 4,673 |
| 242. | 40.40 | Eldon R-I School District / 11,922 |
| 242. | 40.40 | Gentry County R-II School District / 2,004 |
| 242. | 40.40 | Pattonsburg R-II School District / 1,172 |
| 245. | 40.50 | Rockwood School District / 114,923 |
| 245. | 40.50 | Excelsior Springs 40 School District / 17,398 |
| 245. | 40.50 | South Iron County R-I School District / 2,306 |
| 248. | 40.60 | Callao C-8 School District / 700 |
| 248. | 40.60 | Lamar R-I School District / 7,325 |
| 250. | 40.70 | Westran R-I School District / 3,728 |
| 250. | 40.70 | Glenwood R-VIII School District / 2,584 |
| 250. | 40.70 | East Buchanan County C-1 School District / 4,486 |
| 250. | 40.70 | Ripley County R-III School District / 1,013 |
| 254. | 40.80 | Community R-VI School District / 1,985 |
| 254. | 40.80 | New York R-IV School District / 268 |
| 254. | 40.80 | East Lynne 40 School District / 1,520 |
| 254. | 40.80 | Osage County R-I School District / 1,321 |
| 254. | 40.80 | Hillsboro R-III School District / 21,520 |
| 259. | 40.90 | Atlanta C-3 Schools / 1,347 |
| 259. | 40.90 | Silex R-I School District / 2,302 |
| 259. | 40.90 | Holden R-III School District / 8,541 |
| 259. | 40.90 | Howard County R-II School District / 2,370 |
| 259. | 40.90 | Willow Springs R-IV School District / 8,072 |
| 264. | 41.00 | Bloomfield School District / 4,586 |
| 264. | 41.00 | Walnut Grove R-V School District / 1,952 |
| 264. | 41.00 | Everton R-III School District / 1,465 |
| 264. | 41.00 | Bayless School District / 12,505 |
| 264. | 41.00 | Louisiana R-II School District / 4,356 |
| 264. | 41.00 | Newburg R-II School District / 3,369 |
| 264. | 41.00 | Dallas County R-I School District / 13,255 |
| 264. | 41.00 | Hartville R-II School District / 4,653 |
| 264. | 41.00 | Bunker R-III School District / 1,891 |
| 273. | 41.10 | Thayer R-II School District / 4,073 |
| 273. | 41.10 | Potosi R-III School District / 12,515 |
| 275. | 41.20 | Crane R-III School District / 3,990 |
| 275. | 41.20 | Neelyville R-IV School District / 3,996 |
| 275. | 41.20 | Verona R-VII School District / 2,301 |
| 278. | 41.30 | Meadow Heights R-II School District / 3,873 |
| 278. | 41.30 | Chillicothe R-II School District / 12,596 |
| 278. | 41.30 | Osage County R-III School District / 6,362 |
| 281. | 41.40 | New Madrid County R-I School District / 9,458 |
| 281. | 41.40 | King City R-I School District / 1,932 |
| 281. | 41.40 | Lonedell R-XIV School District / 3,428 |
| 281. | 41.40 | Fredericktown R-I School District / 10,722 |
| 285. | 41.50 | Naylor R-II School District / 1,925 |
| 285. | 41.50 | Sarcoxie R-II School District / 3,183 |
| 285. | 41.50 | Carrollton R-VII School District / 5,494 |
| 285. | 41.50 | Summersville R-II School District / 2,841 |
| 285. | 41.50 | Lone Jack C-6 School District / 3,192 |
| 290. | 41.60 | West Nodaway County R-I School District / 1,725 |
| 291. | 41.70 | Cameron R-I School District / 13,125 |
| 291. | 41.70 | Palmyra R-I School District / 6,748 |
| 291. | 41.70 | South Callaway R-II Schools / 4,178 |
| 291. | 41.70 | Hamilton R-II School District / 3,876 |
| 291. | 41.70 | Polo R-VII School District / 2,122 |
| 296. | 41.80 | Montgomery County R-II School District / 8,817 |
| 296. | 41.80 | Macon County R-I School District / 8,666 |
| 296. | 41.80 | Dixon R-I School District / 5,341 |
| 299. | 41.90 | Gilliam C-4 School District / 339 |
| 299. | 41.90 | St. James R-I School District / 10,167 |
| 301. | 42.00 | Madison C-3 School District / 1,593 |
| 301. | 42.00 | Savannah R-III School District / 13,762 |
| 301. | 42.00 | Green Forest R-II School District / 1,964 |
| 301. | 42.00 | North Daviess R-III School District / 819 |
| 301. | 42.00 | Dexter R-XI School District / 12,732 |
| 306. | 42.10 | Ash Grove R-IV School District / 4,846 |
| 306. | 42.10 | Gideon School District / 1,551 |
| 306. | 42.10 | Pettis County R-XII School District / 1,140 |
| 306. | 42.10 | Mid-Buchanan County R-V School District / 4,444 |
| 310. | 42.20 | Norborne R-VIII School District / 1,094 |
| 310. | 42.20 | Union Star R-II School District / 914 |
| 310. | 42.20 | Doniphan R-I School District / 9,964 |
| 310. | 42.20 | Malden R-I School District / 6,143 |
| 310. | 42.20 | Linn County R-I School District / 1,584 |
| 315. | 42.30 | Lockwood R-I School District / 2,411 |
| 316. | 42.40 | Ripley County R-IV School District / 1,021 |
| 317. | 42.50 | Leeton R-X School District / 2,084 |
| 317. | 42.50 | Malta Bend R-V School District / 669 |
| 317. | 42.50 | Macks Creek R-V School District / 2,889 |
| 317. | 42.50 | Campbell R-II School District / 3,684 |
| 317. | 42.50 | Strafford R-VI School District / 6,530 |
| 317. | 42.50 | Spokane R-VII School District / 4,793 |
| 317. | 42.50 | Name N/A / 99,361 |
| 317. | 42.50 | Charleston R-I School District / 8,509 |
| 317. | 42.50 | Westview C-6 School District / 1,194 |
| 326. | 42.60 | Galena R-II School District / 4,021 |
| 326. | 42.60 | Risco R-II School District / 676 |
| 326. | 42.60 | Crawford County R-I School District / 6,311 |
| 329. | 42.70 | Miami R-I School District / 1,282 |
| 329. | 42.70 | Zalma R-V School District / 1,802 |
| 329. | 42.70 | Pattonville School District / 40,437 |
| 329. | 42.70 | Seneca R-VII School District / 8,120 |
| 329. | 42.70 | Bell City R-II School District / 1,424 |
| 334. | 42.80 | Wheaton R-III School District / 2,012 |
| 334. | 42.80 | Marion County R-II School District / 1,347 |
| 334. | 42.80 | Greene County R-VIII School District / 12,716 |
| 334. | 42.80 | Butler R-V School District / 6,375 |
| 338. | 42.90 | Renick R-V School District / 1,779 |
| 338. | 42.90 | Brunswick R-II School District / 1,793 |
| 338. | 42.90 | Diamond R-IV School District / 5,616 |
| 338. | 42.90 | West Platte County R-II School District / 3,970 |
| 338. | 42.90 | Spring Bluff R-XV School District / 1,898 |
| 343. | 43.00 | Chadwick R-I School District / 1,315 |
| 343. | 43.00 | Oran R-III School District / 2,115 |
| 343. | 43.00 | Henry County R-I School District / 4,302 |
| 343. | 43.00 | Princeton R-V School District / 2,534 |
| 343. | 43.00 | Calhoun R-VIII School District / 1,081 |
| 348. | 43.10 | Morgan County R-II School District / 11,373 |
| 348. | 43.10 | Parkway School District / 141,963 |
| 348. | 43.10 | Niangua R-V School District / 1,832 |
| 348. | 43.10 | Clark County R-I School District / 5,883 |
| 352. | 43.20 | Stet R-XV School District / 510 |
| 352. | 43.20 | Gasconade County R-II School District / 11,640 |
| 352. | 43.20 | Luray 33 School District / 457 |
| 352. | 43.20 | Cole County R-V School District / 4,332 |
| 352. | 43.20 | Success R-VI School District / 997 |
| 352. | 43.20 | Advance R-IV School District / 3,265 |
| 358. | 43.40 | Maries County R-I School District / 4,348 |
| 358. | 43.40 | Miller County R-III School District / 1,264 |
| 358. | 43.40 | Arcadia Valley R-II School District / 5,924 |
| 361. | 43.50 | Mehlville School District / 96,221 |
| 361. | 43.50 | Kingston 42 School District / 433 |
| 361. | 43.50 | Clinton County R-III School District / 5,112 |
| 361. | 43.50 | Smithton R-VI School District / 3,192 |
| 361. | 43.50 | Jasper County R-V School District / 2,935 |
| 361. | 43.50 | Northeast Vernon County R-I School District / 1,909 |
| 367. | 43.60 | Eminence R-I School District / 2,160 |
| 367. | 43.60 | Lewis County C-1 School District / 6,509 |
| 367. | 43.60 | Brookfield R-III School District / 6,330 |
| 370. | 43.70 | Maries County R-II School District / 5,339 |
| 371. | 43.80 | Billings R-IV School District / 2,699 |
| 371. | 43.80 | South Holt County R-I School District / 1,974 |
| 371. | 43.80 | Miami R-I School District / 618 |
| 371. | 43.80 | Blackwater R-II School District / 1,019 |
| 371. | 43.80 | Appleton City R-II School District / 2,724 |
| 371. | 43.80 | Grandview R-II School District / 4,571 |
| 371. | 43.80 | Tina-Avalon R-II School District / 845 |
| 378. | 43.90 | Kirkwood School District / 40,877 |
| 378. | 43.90 | Rich Hill R-IV School District / 2,424 |
| 378. | 43.90 | Laclede County R-I School District / 3,337 |
| 378. | 43.90 | Midway School District / 3,430 |
| 378. | 43.90 | Chilhowee R-IV School District / 1,001 |
| 383. | 44.00 | Greenville R-II School District / 5,306 |
| 383. | 44.00 | Monroe City R-I School District / 5,065 |
| 383. | 44.00 | Knox County R-I School District / 4,094 |
| 386. | 44.10 | Taneyville R-II School District / 1,633 |
| 386. | 44.10 | Albany R-III School District / 3,114 |
| 388. | 44.20 | Centerville R-I School District / 1,033 |
| 388. | 44.20 | Salem R-80 School District / 6,629 |
| 388. | 44.20 | Green City R-I School District / 1,860 |
| 391. | 44.30 | Bakersfield R-IV School District / 1,628 |
| 391. | 44.30 | Orrick R-XI School District / 1,866 |
| 391. | 44.30 | Franklin County R-II School District / 1,498 |
| 394. | 44.40 | South Nodaway County R-IV School District / 889 |
| 395. | 44.50 | Nodaway-Holt R-VII School District / 1,643 |
| 395. | 44.50 | Ste. Genevieve County R-II School District / 14,625 |
| 395. | 44.50 | Concordia School District / 3,854 |
| 395. | 44.50 | North Harrison R-III School District / 1,433 |
| 395. | 44.50 | Trenton R-IX School District / 7,590 |
| 395. | 44.50 | Puxico R-VIII School District / 4,626 |
| 401. | 44.60 | Valley R-VI School District / 3,089 |
| 402. | 44.70 | Bismarck R-V School District / 3,306 |
| 402. | 44.70 | Richland R-I School District / 1,714 |
| 404. | 44.80 | Pemiscot County R-3 School District / 891 |
| 404. | 44.80 | Ladue School District / 27,190 |
| 404. | 44.80 | Sweet Springs R-VII School District / 2,769 |
| 407. | 44.90 | Nell Holcomb R-IV School District / 2,835 |
| 407. | 44.90 | Ava R-I School District / 8,860 |
| 407. | 44.90 | Salisbury R-IV School District / 3,331 |
| 407. | 44.90 | Pierce City R-VI School District / 4,164 |
| 411. | 45.00 | Alton R-IV School District / 4,683 |
| 411. | 45.00 | Iron County C-4 School District / 2,938 |
| 411. | 45.00 | Oak Hill R-I School District / 1,672 |
| 411. | 45.00 | St. Elizabeth R-IV School District / 1,251 |
| 415. | 45.10 | Rock Port R-II School District / 2,237 |
| 415. | 45.10 | Leesville R-IX School District / 1,183 |
| 415. | 45.10 | Houston R-I School District / 5,868 |
| 418. | 45.20 | Mansfield R-IV School District / 3,743 |
| 418. | 45.20 | Purdy R-II School District / 3,335 |
| 418. | 45.20 | North Mercer County R-III School District / 1,145 |
| 418. | 45.20 | Clinton School District / 11,756 |
| 422. | 45.30 | El Dorado Springs R-II School District / 7,184 |
| 422. | 45.30 | North Platte County R-I School District / 4,157 |
| 422. | 45.30 | Stockton R-I School District / 7,432 |
| 425. | 45.40 | Shelby County R-IV School District / 3,863 |
| 425. | 45.40 | Stewartsville C-2 School District / 1,221 |
| 425. | 45.40 | Santa Fe R-X School District / 2,357 |
| 425. | 45.40 | Plainview R-VIII School District / 1,027 |
| 429. | 45.50 | Cassville R-IV School District / 11,789 |
| 430. | 45.60 | Belleview R-III School District / 1,304 |
| 430. | 45.60 | Avenue City R-IX School District / 984 |
| 430. | 45.60 | Phelps County R-III School District / 1,892 |
| 433. | 45.70 | Ralls County R-II School District / 5,553 |
| 433. | 45.70 | Clearwater R-I School District / 7,109 |
| 433. | 45.70 | New Franklin R-I School District / 2,600 |
| 433. | 45.70 | Oak Ridge R-VI School District / 2,216 |
| 433. | 45.70 | Johnson County R-VII School District / 3,040 |
| 433. | 45.70 | Cabool School District / 5,908 |
| 439. | 45.80 | Marionville R-IX School District / 4,086 |
| 440. | 45.90 | Woodland R-IV School District / 5,226 |
| 440. | 45.90 | Steelville School District / 5,588 |
| 440. | 45.90 | Wellsville-Middletown R-I School District / 2,649 |
| 443. | 46.00 | Manes R-V School District / 735 |
| 443. | 46.00 | Twin Rivers R-X School District / 5,922 |
| 445. | 46.10 | Bucklin R-II School District / 953 |
| 446. | 46.20 | Kelso C-7 School District / 2,066 |
| 446. | 46.20 | Delta C-7 School District / 1,000 |
| 448. | 46.30 | Osborn R-O School District / 733 |
| 448. | 46.30 | Hardeman R-X School District / 471 |
| 448. | 46.30 | Junction Hill C-12 School District / 1,806 |
| 451. | 46.40 | Hickory County R-I School District / 4,837 |
| 451. | 46.40 | Fair Play R-II School District / 2,431 |
| 451. | 46.40 | Putnam County R-I School District / 4,693 |
| 451. | 46.40 | Marceline R-V School District / 3,546 |
| 455. | 46.50 | Tarkio R-I School District / 2,330 |
| 455. | 46.50 | Strasburg C-3 School District / 987 |
| 457. | 46.60 | Slater School District / 2,352 |
| 457. | 46.60 | Fairfax R-III School District / 1,097 |
| 459. | 46.70 | Fairview R-XI School District / 3,840 |
| 459. | 46.70 | Lexington R-V School District / 5,765 |
| 461. | 46.80 | Camden County R-II School District / 2,643 |
| 461. | 46.80 | Altenburg 48 School District / 995 |
| 463. | 47.00 | Pulaski County R-IV School District / 3,524 |
| 463. | 47.00 | Montrose R-XIV School District / 774 |
| 465. | 47.10 | Lesterville R-IV School District / 1,111 |
| 465. | 47.10 | Hudson R-IX School District / 371 |
| 467. | 47.20 | Lindbergh R-VIII School District / 45,731 |
| 468. | 47.40 | Swedeborg R-III School District / 550 |
| 468. | 47.40 | Worth County R-III School District / 2,140 |
| 468. | 47.40 | Van Buren R-I School District / 2,839 |
| 468. | 47.40 | Boncl R-X School District / 446 |
| 472. | 47.50 | Ridgeway R-V School District / 764 |
| 473. | 47.60 | Gainesville R-V School District / 4,700 |
| 473. | 47.60 | Bevier C-4 School District / 1,290 |
| 475. | 47.70 | Dent-Phelps R-III School District / 2,346 |
| 475. | 47.70 | Craig R-III School District / 676 |
| 475. | 47.70 | Forsyth R-III School District / 8,220 |
| 478. | 47.80 | Holt County R-II School District / 1,680 |
| 479. | 47.90 | Cole Camp R-I School District / 5,152 |
| 480. | 48.00 | School of The Osage R-II School District / 12,016 |
| 480. | 48.00 | Southern Reynolds County R-IV School District / 2,883 |
| 482. | 48.20 | Gasconade County R-I School District / 7,505 |
| 483. | 48.30 | Gasconade C-4 School District / 805 |
| 484. | 48.40 | Skyline R-II School District / 1,391 |
| 484. | 48.40 | Camdenton R-III School District / 31,390 |
| 486. | 48.50 | Osceola School District / 3,084 |
| 486. | 48.50 | Southwest Livingston County R-I School District / 1,176 |
| 488. | 48.90 | Roscoe C-1 School District / 579 |
| 489. | 49.00 | Gilman City R-IV School District / 765 |
| 489. | 49.00 | Morgan County R-I School District / 5,482 |
| 491. | 49.10 | Lakeland R-III School District / 2,679 |
| 492. | 49.20 | Ballard R-II School District / 775 |
| 492. | 49.20 | Bosworth R-V School District / 605 |
| 494. | 49.40 | Weaubleau R-III School District / 2,613 |
| 494. | 49.40 | Mark Twain R-VIII School District / 698 |
| 494. | 49.40 | Raymondville R-7 School District / 1,079 |
| 497. | 49.50 | Higbee R-VIII School District / 1,277 |
| 498. | 49.60 | Pleasant View R-VI School District / 425 |
| 499. | 49.80 | Macon County R-IV School District / 857 |
| 500. | 49.90 | Paris R-II School District / 3,081 |
| 501. | 50.20 | Thornfield R-I School District / 626 |
| 502. | 50.30 | Keytesville R-III School District / 1,161 |
| 502. | 50.30 | Newtown-Harris R-III School District / 425 |
| 502. | 50.30 | Orearville R-IV School District / 304 |
| 505. | 50.40 | Lincoln R-II School District / 3,969 |
| 506. | 50.50 | Couch R-I School District / 1,144 |
| 507. | 50.60 | Cainsville R-I School District / 438 |
| 508. | 50.80 | Humansville R-IV School District / 2,752 |
| 509. | 51.30 | Missouri City 56 School District / 485 |
| 510. | 52.10 | Blue Eye School District / 5,297 |
| 511. | 52.20 | Greenfield R-IV School District / 2,778 |
| 512. | 52.40 | Winston R-VI School District / 1,067 |
| 513. | 52.50 | Dora R-III School District / 1,920 |
| 514. | 53.10 | Reeds Spring R-IV School District / 16,061 |
| 515. | 53.30 | Oregon-Howell R-III School District / 1,551 |
| 516. | 53.40 | Warsaw R-IX School District / 10,670 |
| 517. | 54.60 | Lutie R-VI School District / 1,500 |
| 518. | 57.10 | Wheatland R-II School District / 2,974 |
| 519. | 58.00 | Climax Springs R-IV School District / 2,309 |
| 520. | 61.00 | Hermitage R-IV School District / 3,014 |
| 521. | 62.30 | Shell Knob 78 School District / 2,759 |
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.
