| Rank | Percentage of Population Age 45 to 54 ▼ | School District / Population |
| 1. | 24.7% | Brorson Elementary School District / 178 |
| 2. | 24.0% | Cottonwood Elementary School District / 233 |
| 3. | 23.8% | Luther Elementary School District / 395 |
| 4. | 23.7% | Wolf Creek Elementary School District / 612 |
| 5. | 23.6% | Sunset Elementary School District / 212 |
| 6. | 23.5% | Gardiner Elementary School District / 1,360 |
| 7. | 23.4% | Avon Elementary School District / 239 |
| 8. | 23.2% | Cottonwood Elementary School District / 108 |
| 9. | 23.0% | Gardiner High School District / 1,457 |
| 10. | 22.7% | Landusky Elementary School District / 44 |
| 11. | 22.7% | Polaris Elementary School District / 97 |
| 12. | 22.1% | Swan Lake-Salmon Elementary School District / 353 |
| 13. | 22.1% | Galata Elementary School District / 263 |
| 14. | 21.9% | Custer K-12 Schools / 361 |
| 15. | 21.7% | Nye Elementary School District / 212 |
| 16. | 21.7% | Benton Lake Elementary School District / 83 |
| 17. | 21.3% | Lindsay Elementary School District / 338 |
| 17. | 21.3% | Saco High School District / 493 |
| 19. | 21.2% | Fromberg K-12 Schools / 1,060 |
| 20. | 21.2% | Potomac Elementary School District / 1,075 |
| 21. | 21.2% | Ramsay Elementary School District / 1,265 |
| 22. | 21.1% | Raynesford Elementary School District / 142 |
| 23. | 21.1% | Helmville Elementary School District / 218 |
| 24. | 21.1% | Saco Elementary School District / 532 |
| 24. | 21.1% | King Colony Elementary School District / 323 |
| 26. | 21.0% | Montana City Elementary School District / 2,963 |
| 27. | 21.0% | Geyser High School District / 482 |
| 28. | 20.9% | La Motte Elementary School District / 843 |
| 28. | 20.9% | Geyser Elementary School District / 340 |
| 30. | 20.8% | Fair-Mont-Egan Elementary School District / 1,133 |
| 31. | 20.8% | Spring Creek Colony Elementary School District / 53 |
| 32. | 20.6% | Birney Elementary School District / 102 |
| 33. | 20.6% | Reedpoint High School District / 584 |
| 34. | 20.5% | Kila Elementary School District / 1,924 |
| 35. | 20.5% | Anderson Elementary School District / 1,154 |
| 36. | 20.4% | Grant Elementary School District / 142 |
| 36. | 20.4% | Rapelje Elementary School District / 240 |
| 38. | 20.4% | Shawmut Elementary School District / 108 |
| 39. | 20.3% | Garrison Elementary School District / 128 |
| 40. | 20.3% | Van Norman Elementary School District / 74 |
| 41. | 20.3% | Canyon Creek Elementary School District / 1,921 |
| 42. | 20.2% | North Star Elementary School District / 966 |
| 43. | 20.2% | Deep Creek Elementary School District / 114 |
| 44. | 20.2% | Creston Elementary School District / 1,180 |
| 45. | 20.1% | Reedpoint Elementary School District / 648 |
| 46. | 20.0% | Ryegate K-12 Schools / 505 |
| 47. | 20.0% | Kinsey Elementary School District / 496 |
| 48. | 19.9% | Colstrip Elementary School District / 2,493 |
| 48. | 19.9% | Blue Creek Elementary School District / 2,111 |
| 48. | 19.9% | Colstrip High School District / 2,493 |
| 51. | 19.9% | Arrowhead Elementary School District / 1,909 |
| 52. | 19.8% | Ulm Elementary School District / 726 |
| 53. | 19.8% | Willow Creek Elementary School District / 338 |
| 54. | 19.8% | Hysham K-12 Schools / 718 |
| 55. | 19.8% | S H Elementary School District / 157 |
| 56. | 19.7% | Trinity Elementary School District / 1,592 |
| 57. | 19.6% | Willow Creek High School District / 275 |
| 57. | 19.6% | Rau Elementary School District / 336 |
| 59. | 19.6% | Hawks Home Elementary School District / 107 |
| 60. | 19.6% | Peerless K-12 Schools / 148 |
| 60. | 19.6% | South Stacey Elementary School District / 97 |
| 62. | 19.5% | Lincoln K-12 Schools / 1,274 |
| 62. | 19.5% | Jefferson High School District / 7,928 |
| 64. | 19.5% | Olney-Bissell Elementary School District / 1,158 |
| 65. | 19.5% | Dutton/Brady K-12 Schools / 981 |
| 65. | 19.5% | Geraldine High School District / 647 |
| 67. | 19.4% | Winnett K-12 Schools / 494 |
| 68. | 19.4% | Trego Elementary School District / 588 |
| 69. | 19.4% | Helena Flats Elementary School District / 1,844 |
| 69. | 19.4% | Geraldine Elementary School District / 625 |
| 71. | 19.4% | Davey Elementary School District / 62 |
| 72. | 19.3% | Belfry K-12 Schools / 610 |
| 73. | 19.3% | West Yellowstone K-12 School District / 1,769 |
| 74. | 19.3% | Elder Grove Elementary School District / 3,014 |
| 74. | 19.3% | East Glacier Park Elementary School District / 549 |
| 76. | 19.2% | Bynum Elementary School District / 224 |
| 77. | 19.2% | Nashua K-12 Schools / 891 |
| 78. | 19.2% | Highwood Elementary School District / 464 |
| 79. | 19.1% | Highwood High School District / 455 |
| 80. | 19.1% | Whitewater K-12 Schools / 199 |
| 81. | 19.1% | Frontier Elementary School District / 430 |
| 82. | 19.1% | Trail Creek Elementary School District / 42 |
| 83. | 19.0% | Cottonwood Elementary School District / 358 |
| 84. | 19.0% | Bear Paw Elementary School District / 137 |
| 85. | 19.0% | Red Lodge High School District / 3,828 |
| 86. | 19.0% | Pass Creek Elementary School District / 95 |
| 86. | 19.0% | Yaak Elementary School District / 248 |
| 86. | 19.0% | Kircher Elementary School District / 797 |
| 89. | 18.9% | Swan River Elementary School District / 1,551 |
| 90. | 18.9% | Alzada Elementary School District / 159 |
| 91. | 18.8% | Florence-Carlton K-12 Schools / 5,328 |
| 92. | 18.8% | Turner High School District / 303 |
| 93. | 18.8% | Centerville High School District / 1,338 |
| 93. | 18.8% | Roberts K-12 Schools / 890 |
| 95. | 18.8% | Centerville Elementary School District / 1,381 |
| 95. | 18.8% | Boulder Elementary School District / 2,000 |
| 97. | 18.7% | Gallatin Gateway Elementary School District / 1,565 |
| 98. | 18.7% | Hall Elementary School District / 294 |
| 99. | 18.7% | Clancy Elementary School District / 2,730 |
| 99. | 18.7% | St. Regis K-12 Schools / 1,247 |
| 101. | 18.6% | Lennep Elementary School District / 59 |
| 102. | 18.6% | Turner Elementary School District / 306 |
| 103. | 18.5% | Alder Elementary School District / 292 |
| 104. | 18.5% | Red Lodge Elementary School District / 3,300 |
| 105. | 18.5% | Melstone High School District / 287 |
| 106. | 18.5% | Shepherd Elementary School District / 3,881 |
| 106. | 18.5% | Shepherd High School District / 3,881 |
| 108. | 18.4% | North Star High School District / 1,112 |
| 109. | 18.3% | Elliston Elementary School District / 339 |
| 109. | 18.3% | Pioneer Elementary School District / 913 |
| 111. | 18.3% | Sunburst K-12 Schools / 1,232 |
| 112. | 18.2% | Joliet Elementary School District / 2,039 |
| 113. | 18.2% | Ovando Elementary School District / 253 |
| 114. | 18.2% | Winifred K-12 Schools / 540 |
| 114. | 18.2% | Wisdom Elementary School District / 248 |
| 116. | 18.0% | Drummond High School District / 1,236 |
| 117. | 18.0% | Dodson High School District / 350 |
| 118. | 18.0% | Powell County High School District / 7,226 |
| 119. | 17.9% | Savage Elementary School District / 586 |
| 120. | 17.9% | Warrick Elementary School District / 28 |
| 120. | 17.9% | Knees Elementary School District / 168 |
| 122. | 17.8% | Drummond Elementary School District / 942 |
| 122. | 17.8% | Carter County High School District / 1,144 |
| 124. | 17.8% | Shields Valley High School District / 1,628 |
| 124. | 17.8% | Shields Valley Elementary School District / 1,628 |
| 126. | 17.8% | Independent Elementary School District / 2,624 |
| 127. | 17.8% | Frenchtown K-12 Schools / 6,582 |
| 127. | 17.8% | Culbertson High School District / 917 |
| 127. | 17.8% | Rapelje High School District / 343 |
| 130. | 17.8% | Roy K-12 Schools / 304 |
| 131. | 17.7% | Cascade High School District / 2,792 |
| 132. | 17.7% | Manhattan Elementary School District / 2,703 |
| 133. | 17.7% | Froid Elementary School District / 430 |
| 133. | 17.7% | Froid High School District / 430 |
| 135. | 17.7% | Whitehall Elementary School District / 3,443 |
| 135. | 17.7% | Savage High School District / 606 |
| 135. | 17.7% | Park City Elementary School District / 2,282 |
| 138. | 17.7% | Deer Lodge Elementary School District / 5,818 |
| 139. | 17.6% | Bridger K-12 Schools / 1,304 |
| 140. | 17.6% | Culbertson Elementary School District / 1,022 |
| 141. | 17.6% | Alberton K-12 Schools / 1,371 |
| 141. | 17.6% | Westby K-12 Schools / 330 |
| 143. | 17.5% | Absarokee High School District / 2,302 |
| 144. | 17.5% | McLeod Elementary School District / 223 |
| 145. | 17.5% | Broadview High School District / 927 |
| 145. | 17.5% | Malmborg Elementary School District / 206 |
| 147. | 17.5% | Sidney High School District / 7,392 |
| 147. | 17.5% | Basin Elementary School District / 235 |
| 149. | 17.4% | Chester-Joplin-Inverness Elementary School District / 2,190 |
| 150. | 17.4% | Ekalaka Elementary School District / 878 |
| 151. | 17.4% | Lone Rock Elementary School District / 3,037 |
| 151. | 17.4% | Plentywood K-12 Schools / 2,434 |
| 153. | 17.4% | Whitehall High School District / 3,913 |
| 153. | 17.4% | McCormick Elementary School District / 351 |
| 155. | 17.3% | Hobson K-12 Schools / 738 |
| 155. | 17.3% | Box Elder High School District / 421 |
| 155. | 17.3% | Box Elder Elementary School District / 421 |
| 158. | 17.3% | Seeley Lake Elementary School District / 2,054 |
| 159. | 17.3% | Dodson Elementary School District / 306 |
| 160. | 17.3% | Three Forks Elementary School District / 3,509 |
| 161. | 17.2% | Three Forks High School District / 3,480 |
| 161. | 17.2% | Park City High School District / 2,082 |
| 163. | 17.2% | Zurich Elementary School District / 308 |
| 164. | 17.2% | Sidney Elementary School District / 6,817 |
| 165. | 17.2% | Sylvanite Elementary School District / 134 |
| 166. | 17.2% | Power High School District / 484 |
| 166. | 17.2% | Melstone Elementary School District / 484 |
| 168. | 17.1% | Marion Elementary School District / 1,547 |
| 169. | 17.1% | Townsend K-12 Schools / 5,046 |
| 170. | 17.1% | Huntley Project K-12 Schools / 4,244 |
| 170. | 17.1% | Jackson Elementary School District / 152 |
| 170. | 17.1% | Stanford K-12 Schools / 818 |
| 173. | 17.1% | Joliet High School District / 2,386 |
| 174. | 17.1% | Broadview Elementary School District / 838 |
| 175. | 17.1% | Absarokee Elementary School District / 1,865 |
| 176. | 17.0% | Fishtail Elementary School District / 358 |
| 177. | 17.0% | Bainville K-12 Schools / 364 |
| 178. | 17.0% | Manhattan High School District / 4,564 |
| 179. | 17.0% | Fortine Elementary School District / 770 |
| 180. | 17.0% | East Helena Elementary School District / 8,680 |
| 181. | 17.0% | Power Elementary School District / 454 |
| 181. | 17.0% | Dixon Elementary School District / 460 |
| 181. | 17.0% | Target Range Elementary School District / 3,531 |
| 184. | 16.9% | Shelby High School District / 4,092 |
| 185. | 16.9% | Whitefish High School District / 13,656 |
| 186. | 16.9% | Lambert Elementary School District / 385 |
| 186. | 16.9% | Golden Ridge Elementary School District / 160 |
| 188. | 16.9% | Morin Elementary School District / 403 |
| 189. | 16.9% | Clinton Elementary School District / 2,354 |
| 189. | 16.9% | Opheim K-12 Schools / 338 |
| 191. | 16.9% | Malta K-12 Schools / 3,211 |
| 192. | 16.8% | Circle Elementary School District / 1,317 |
| 193. | 16.8% | Augusta Elementary School District / 662 |
| 193. | 16.8% | Medicine Lake K-12 Schools / 620 |
| 193. | 16.8% | Roundup High School District / 4,246 |
| 196. | 16.8% | Belt Elementary School District / 2,106 |
| 197. | 16.8% | Cascade Elementary School District / 1,952 |
| 198. | 16.7% | Lincoln County High School District / 6,260 |
| 199. | 16.7% | Whitefish Elementary School District / 12,979 |
| 200. | 16.7% | Roundup Elementary School District / 4,109 |
| 200. | 16.7% | Rosebud Elementary School District / 437 |
| 200. | 16.7% | Victor K-12 Schools / 3,486 |
| 203. | 16.7% | Sand Springs Elementary School District / 90 |
| 203. | 16.7% | Bigfork High School District / 7,462 |
| 205. | 16.7% | Lockwood Elementary School District / 7,865 |
| 206. | 16.7% | Columbus High School District / 3,825 |
| 206. | 16.7% | Chester-Joplin-Inverness High School District / 2,463 |
| 208. | 16.6% | Deer Creek Elementary School District / 1,684 |
| 209. | 16.6% | Columbia Falls Elementary School District / 14,331 |
| 210. | 16.6% | Columbia Falls High School District / 14,817 |
| 210. | 16.6% | Philipsburg K-12 Schools / 1,843 |
| 212. | 16.6% | Shelby Elementary School District / 3,829 |
| 213. | 16.6% | Hot Springs Elementary School District / 1,267 |
| 214. | 16.6% | Baker K-12 Schools / 2,470 |
| 215. | 16.5% | Reichle Elementary School District / 127 |
| 216. | 16.5% | Denton Elementary School District / 527 |
| 217. | 16.5% | Cayuse Prairie Elementary School District / 2,440 |
| 217. | 16.5% | Belt High School District / 2,008 |
| 219. | 16.5% | Park High School District / 12,795 |
| 219. | 16.5% | West Glacier Elementary School District / 486 |
| 221. | 16.4% | Melville Elementary School District / 219 |
| 221. | 16.4% | Circle High School District / 1,734 |
| 221. | 16.4% | Libby K-12 Schools / 9,844 |
| 224. | 16.4% | Lambert High School District / 347 |
| 225. | 16.4% | Broadus Elementary School District / 1,371 |
| 226. | 16.4% | Monforton Elementary School District / 2,039 |
| 227. | 16.4% | Vaughn Elementary School District / 910 |
| 227. | 16.4% | Powder River County High School District / 1,759 |
| 229. | 16.4% | White Sulphur Springs Elementary School District / 1,766 |
| 229. | 16.4% | Cut Bank Elementary School District / 4,406 |
| 229. | 16.4% | Eureka Elementary School District / 4,902 |
| 229. | 16.4% | Columbus Elementary School District / 3,625 |
| 233. | 16.3% | Rosebud High School District / 459 |
| 234. | 16.3% | Troy High School District / 3,583 |
| 235. | 16.3% | Sheridan High School District / 1,673 |
| 236. | 16.3% | Fort Benton High School District / 2,296 |
| 237. | 16.3% | Cut Bank High School District / 4,530 |
| 238. | 16.2% | Fort Benton Elementary School District / 1,890 |
| 239. | 16.2% | White Sulphur Springs High School District / 1,891 |
| 240. | 16.2% | Woodman Elementary School District / 451 |
| 240. | 16.2% | Conrad Elementary School District / 3,385 |
| 242. | 16.2% | Forsyth Elementary School District / 2,525 |
| 243. | 16.2% | Molt Elementary School District / 192 |
| 244. | 16.1% | West Valley Elementary School District / 3,770 |
| 245. | 16.1% | Valier Elementary School District / 981 |
| 246. | 16.1% | Deer Park Elementary School District / 1,000 |
| 246. | 16.1% | Stevensville High School District / 9,662 |
| 248. | 16.1% | Greycliff Elementary School District / 348 |
| 249. | 16.1% | Cleveland Elementary School District / 81 |
| 250. | 16.0% | Amsterdam Elementary School District / 1,808 |
| 251. | 16.0% | Wibaux K-12 Schools / 1,017 |
| 251. | 16.0% | Ennis K-12 Schools / 3,482 |
| 253. | 16.0% | Charlo High School District / 1,792 |
| 254. | 16.0% | St. Ignatius K-12 Schools / 3,276 |
| 255. | 16.0% | Helena High School District / 61,307 |
| 256. | 16.0% | Fairfield Elementary School District / 1,245 |
| 257. | 16.0% | Superior K-12 Schools / 2,275 |
| 258. | 15.9% | Forsyth High School District / 2,585 |
| 258. | 15.9% | Valier High School District / 1,355 |
| 260. | 15.9% | Troy Elementary School District / 2,850 |
| 261. | 15.9% | Hot Springs High School District / 1,439 |
| 261. | 15.9% | Scobey K-12 Schools / 1,603 |
| 263. | 15.9% | Plains Elementary School District / 3,082 |
| 264. | 15.9% | Livingston Elementary School District / 10,406 |
| 265. | 15.9% | Smith Valley Elementary School District / 1,902 |
| 266. | 15.9% | Sheridan Elementary School District / 1,381 |
| 267. | 15.9% | Bigfork Elementary School District / 5,747 |
| 268. | 15.8% | Noxon Elementary School District / 1,421 |
| 269. | 15.8% | Arlee High School District / 2,530 |
| 269. | 15.8% | Arlee Elementary School District / 2,530 |
| 271. | 15.8% | Noxon High School District / 2,551 |
| 272. | 15.8% | Fairfield High School District / 1,900 |
| 273. | 15.8% | Anaconda Elementary School District / 9,023 |
| 274. | 15.8% | Trout Creek Elementary School District / 1,130 |
| 274. | 15.8% | Ophir Elementary School District / 2,153 |
| 274. | 15.8% | Glasgow K-12 Schools / 4,951 |
| 277. | 15.7% | Chinook High School District / 2,333 |
| 277. | 15.7% | Anaconda High School District / 9,099 |
| 279. | 15.7% | Hinsdale High School District / 446 |
| 280. | 15.7% | Charlo Elementary School District / 1,332 |
| 280. | 15.7% | Evergreen Elementary School District / 6,002 |
| 282. | 15.7% | Dawson High School District / 8,479 |
| 282. | 15.7% | Conrad High School District / 3,640 |
| 284. | 15.7% | Springhill Elementary School District / 115 |
| 285. | 15.6% | Helena Elementary School District / 50,423 |
| 285. | 15.6% | Richey High School District / 487 |
| 287. | 15.6% | Richey Elementary School District / 417 |
| 288. | 15.6% | Lustre Elementary School District / 199 |
| 289. | 15.6% | Butte High School District / 34,152 |
| 289. | 15.6% | Lima K-12 Schools / 508 |
| 291. | 15.5% | Dupuyer Elementary School District / 374 |
| 292. | 15.5% | Harrison K-12 Schools / 658 |
| 292. | 15.5% | Stevensville Elementary School District / 6,625 |
| 294. | 15.5% | Plevna K-12 Schools / 420 |
| 294. | 15.5% | Ayers Elementary School District / 84 |
| 294. | 15.5% | Hinsdale Elementary School District / 407 |
| 294. | 15.5% | Augusta High School District / 814 |
| 298. | 15.5% | Cooke City Elementary School District / 97 |
| 299. | 15.5% | Sweet Grass County High School District / 3,559 |
| 300. | 15.4% | Custer County High School District / 11,699 |
| 300. | 15.4% | Fergus High School District / 9,002 |
| 302. | 15.4% | Whitlash Elementary School District / 39 |
| 303. | 15.4% | Flathead High School District / 57,390 |
| 304. | 15.4% | Choteau High School District / 3,118 |
| 304. | 15.4% | Butte Elementary School District / 32,592 |
| 304. | 15.4% | Twin Bridges K-12 Schools / 1,491 |
| 307. | 15.4% | Somers Elementary School District / 6,311 |
| 307. | 15.4% | Simms High School District / 3,030 |
| 307. | 15.4% | Vida Elementary School District / 417 |
| 310. | 15.3% | Pryor Elementary School District / 732 |
| 310. | 15.3% | Plenty Coups High School District / 732 |
| 310. | 15.3% | Plains High School District / 3,425 |
| 313. | 15.3% | Bonner Elementary School District / 2,566 |
| 314. | 15.3% | Choteau Elementary School District / 2,582 |
| 315. | 15.3% | Chinook Elementary School District / 1,888 |
| 316. | 15.2% | Greenfield Elementary School District / 525 |
| 317. | 15.2% | Denton High School District / 585 |
| 318. | 15.2% | Darby K-12 Schools / 4,042 |
| 319. | 15.2% | Big Timber Elementary School District / 2,697 |
| 320. | 15.2% | Gold Creek Elementary School District / 231 |
| 321. | 15.1% | Lewistown Elementary School District / 8,626 |
| 322. | 15.1% | Pine Creek Elementary School District / 357 |
| 323. | 15.1% | Wise River Elementary School District / 291 |
| 324. | 15.1% | Glendive Elementary School District / 6,441 |
| 325. | 15.1% | Corvallis K-12 Schools / 7,645 |
| 326. | 15.0% | Thompson Falls High School District / 3,556 |
| 326. | 15.0% | Thompson Falls Elementary School District / 3,556 |
| 328. | 15.0% | Grass Range High School District / 594 |
| 329. | 14.9% | Wolf Point High School District / 4,635 |
| 330. | 14.9% | Sun River Valley Elementary School District / 2,120 |
| 331. | 14.9% | Grass Range Elementary School District / 510 |
| 332. | 14.9% | Laurel High School District / 10,696 |
| 333. | 14.8% | Billings High School District / 127,987 |
| 334. | 14.8% | Fairview High School District / 1,401 |
| 335. | 14.7% | Beaverhead County High School District / 8,738 |
| 336. | 14.7% | Laurel Elementary School District / 11,043 |
| 337. | 14.7% | Miles City Elementary School District / 9,934 |
| 338. | 14.7% | Hays-Lodge Pole K-12 Schools / 1,322 |
| 339. | 14.6% | Belgrade High School District / 20,094 |
| 340. | 14.6% | Fairview Elementary School District / 1,321 |
| 340. | 14.6% | Belgrade Elementary School District / 19,906 |
| 342. | 14.6% | Moore High School District / 528 |
| 342. | 14.6% | Moore Elementary School District / 528 |
| 344. | 14.5% | Wolf Point Elementary School District / 4,205 |
| 345. | 14.5% | Springdale Elementary School District / 131 |
| 346. | 14.5% | Great Falls High School District / 72,159 |
| 347. | 14.5% | Great Falls Elementary School District / 72,018 |
| 348. | 14.3% | Browning High School District / 8,869 |
| 349. | 14.3% | Billings Elementary School District / 107,977 |
| 350. | 14.3% | Havre High School District / 12,655 |
| 351. | 14.3% | Dillon Elementary School District / 7,757 |
| 352. | 14.3% | Terry K-12 Schools / 1,179 |
| 353. | 14.2% | Lolo Elementary School District / 5,126 |
| 354. | 14.2% | Upper West Shore Elementary School District / 903 |
| 355. | 14.1% | Havre Elementary School District / 12,252 |
| 355. | 14.1% | De Smet Elementary School District / 857 |
| 357. | 14.0% | Browning Elementary School District / 8,320 |
| 358. | 13.9% | Jordan Elementary School District / 661 |
| 359. | 13.9% | Melrose Elementary School District / 115 |
| 360. | 13.9% | Hamilton K-12 Schools / 11,122 |
| 361. | 13.9% | Kalispell Elementary School District / 27,692 |
| 362. | 13.9% | Spring Creek Elementary School District / 101 |
| 363. | 13.8% | Hardin High School District / 8,178 |
| 364. | 13.8% | Polson High School District / 11,105 |
| 365. | 13.8% | Pine Grove Elementary School District / 87 |
| 366. | 13.8% | Polson Elementary School District / 9,949 |
| 366. | 13.8% | Heart Butte K-12 Schools / 748 |
| 368. | 13.7% | Ashland Elementary School District / 1,275 |
| 368. | 13.7% | Cohagen Elementary School District / 102 |
| 370. | 13.7% | Judith Gap Elementary School District / 336 |
| 370. | 13.7% | Cardwell Elementary School District / 409 |
| 370. | 13.7% | Judith Gap High School District / 336 |
| 373. | 13.7% | Garfield County High School District / 1,206 |
| 373. | 13.7% | Biddle Elementary School District / 117 |
| 375. | 13.6% | Ronan High School District / 8,645 |
| 375. | 13.6% | Ronan Elementary School District / 8,645 |
| 377. | 13.6% | Harlowton High School District / 1,899 |
| 378. | 13.5% | Bloomfield Elementary School District / 104 |
| 378. | 13.5% | Pendroy Elementary School District / 312 |
| 380. | 13.4% | Valley View Elementary School District / 253 |
| 381. | 13.2% | Hellgate Elementary School District / 12,805 |
| 382. | 13.2% | Big Sandy Elementary School District / 1,166 |
| 383. | 13.2% | Frazer High School District / 743 |
| 384. | 13.2% | Harlowton Elementary School District / 1,791 |
| 385. | 13.2% | Hardin Elementary School District / 9,478 |
| 386. | 13.1% | Carter Elementary School District / 168 |
| 387. | 13.1% | Missoula High School District / 100,417 |
| 388. | 13.1% | Swan Valley Elementary School District / 551 |
| 389. | 12.8% | Divide Elementary School District / 180 |
| 390. | 12.7% | Lodge Grass Elementary School District / 1,774 |
| 391. | 12.7% | Lodge Grass High School District / 2,229 |
| 392. | 12.6% | Poplar High School District / 3,523 |
| 392. | 12.6% | Poplar Elementary School District / 3,523 |
| 392. | 12.6% | Harlem High School District / 2,533 |
| 395. | 12.6% | Brockton High School District / 556 |
| 395. | 12.6% | Brockton Elementary School District / 556 |
| 397. | 12.6% | Harlem Elementary School District / 2,405 |
| 398. | 12.5% | Wyola Elementary School District / 455 |
| 399. | 12.3% | Frazer Elementary School District / 544 |
| 400. | 12.2% | Missoula Elementary School District / 68,646 |
| 401. | 12.1% | Bozeman High School District / 59,653 |
| 402. | 12.1% | Mountain View Elementary School District / 124 |
| 403. | 12.0% | Elysian Elementary School District / 1,084 |
| 404. | 11.6% | Lavina K-12 Schools / 379 |
| 405. | 11.4% | North Harlem Colony Elementary School District / 44 |
| 406. | 11.2% | Bozeman Elementary School District / 51,460 |
| 407. | 11.1% | Camas Prairie Elementary School District / 172 |
| 408. | 11.0% | Pleasant Valley Elementary School District / 164 |
| 408. | 11.0% | Twin Buttes Elementary School District / 82 |
| 410. | 10.9% | Spring Creek Elementary School District / 64 |
| 411. | 10.9% | Lame Deer High School District / 5,376 |
| 412. | 10.8% | Rocky Boy High School District / 1,784 |
| 413. | 10.7% | Big Sandy High School District / 2,415 |
| 414. | 10.6% | Ringling Elementary School District / 66 |
| 415. | 10.5% | Big Dry Creek Elementary School District / 57 |
| 416. | 10.5% | Lame Deer Elementary School District / 2,771 |
| 417. | 10.1% | Kester Elementary School District / 79 |
| 418. | 9.9% | Paradise Elementary School District / 343 |
| 419. | 9.9% | Auchard Creek Elementary School District / 152 |
| 420. | 9.8% | Rocky Boy Elementary School District / 3,005 |
| 421. | 9.6% | S Y Elementary School District / 73 |
| 422. | 9.4% | Liberty Elementary School District / 234 |
| 423. | 8.6% | Miami Elementary School District / 255 |
| 424. | 8.0% | Ross Elementary School District / 25 |
| 425. | 5.4% | Gildford Colony Elementary School District / 129 |
| 426. | 3.5% | Deerfield Elementary School District / 58 |
| 427. | 1.3% | Yellowstone Academy Elementary School District / 75 |
Please note that we only rank locations with 'Percentage of Population Age 45 to 54' data. The rank above might not be a complete list. Locations without 'Percentage of Population Age 45 to 54' data are not listed.
