| Rank | Average Family Size ▼ | School District / Population |
| 1. | 7.75 | Ross Elementary School District / 40 |
| 2. | 6.50 | Auchard Creek Elementary School District / 95 |
| 3. | 6.33 | Liberty Elementary School District / 114 |
| 4. | 6.31 | Pryor Elementary School District / 1,019 |
| 4. | 6.31 | Plenty Coups High School District / 1,019 |
| 6. | 6.15 | Brockton High School District / 996 |
| 6. | 6.15 | Brockton Elementary School District / 996 |
| 8. | 6.00 | Gildford Colony Elementary School District / 132 |
| 9. | 5.91 | Miami Elementary School District / 135 |
| 10. | 5.74 | Heart Butte K-12 Schools / 772 |
| 11. | 4.94 | Lame Deer Elementary School District / 2,928 |
| 12. | 4.86 | North Harlem Colony Elementary School District / 34 |
| 13. | 4.74 | Frazer Elementary School District / 417 |
| 14. | 4.65 | Lodge Grass Elementary School District / 1,654 |
| 15. | 4.63 | Lodge Grass High School District / 2,242 |
| 16. | 4.58 | Wyola Elementary School District / 588 |
| 17. | 4.53 | Frontier Elementary School District / 559 |
| 18. | 4.44 | Wolf Point High School District / 4,225 |
| 19. | 4.42 | Wolf Point Elementary School District / 3,666 |
| 20. | 4.33 | Lame Deer High School District / 5,207 |
| 21. | 4.24 | Frazer High School District / 668 |
| 22. | 4.22 | Rocky Boy Elementary School District / 2,801 |
| 23. | 4.14 | Harlem Elementary School District / 2,608 |
| 24. | 4.08 | Hardin Elementary School District / 8,883 |
| 25. | 4.08 | Harlem High School District / 2,696 |
| 26. | 4.08 | Browning Elementary School District / 8,273 |
| 27. | 4.07 | Browning High School District / 9,084 |
| 28. | 4.06 | Hardin High School District / 7,844 |
| 29. | 4.00 | Yellowstone Academy Elementary School District / 67 |
| 30. | 3.98 | East Glacier Park Elementary School District / 811 |
| 31. | 3.91 | Poplar Elementary School District / 3,124 |
| 31. | 3.91 | Poplar High School District / 3,124 |
| 33. | 3.85 | Rocky Boy High School District / 1,613 |
| 34. | 3.82 | Dupuyer Elementary School District / 311 |
| 35. | 3.75 | Bainville K-12 Schools / 412 |
| 36. | 3.75 | Whitewater K-12 Schools / 125 |
| 37. | 3.74 | Big Sandy High School District / 2,556 |
| 38. | 3.73 | Lavina K-12 Schools / 476 |
| 39. | 3.70 | Ringling Elementary School District / 82 |
| 40. | 3.70 | Morin Elementary School District / 513 |
| 41. | 3.67 | Hays-Lodge Pole K-12 Schools / 1,083 |
| 42. | 3.63 | Helmville Elementary School District / 330 |
| 43. | 3.56 | Garrison Elementary School District / 142 |
| 44. | 3.55 | Biddle Elementary School District / 121 |
| 45. | 3.55 | White Sulphur Springs Elementary School District / 1,881 |
| 46. | 3.55 | White Sulphur Springs High School District / 2,024 |
| 47. | 3.54 | Willow Creek High School District / 316 |
| 48. | 3.54 | Valley View Elementary School District / 361 |
| 49. | 3.50 | Deerfield Elementary School District / 35 |
| 50. | 3.48 | Pendroy Elementary School District / 323 |
| 51. | 3.48 | Culbertson High School District / 1,027 |
| 52. | 3.45 | Ashland Elementary School District / 1,144 |
| 53. | 3.44 | Valier High School District / 1,467 |
| 54. | 3.43 | Culbertson Elementary School District / 1,139 |
| 55. | 3.43 | Willow Creek Elementary School District / 364 |
| 56. | 3.42 | Elliston Elementary School District / 281 |
| 57. | 3.42 | Trail Creek Elementary School District / 48 |
| 58. | 3.41 | Helena Flats Elementary School District / 1,568 |
| 59. | 3.41 | Avon Elementary School District / 243 |
| 60. | 3.37 | Box Elder High School District / 416 |
| 60. | 3.37 | Box Elder Elementary School District / 416 |
| 62. | 3.37 | Cut Bank High School District / 4,167 |
| 62. | 3.37 | Cut Bank Elementary School District / 4,167 |
| 64. | 3.36 | Chester-Joplin-Inverness High School District / 2,376 |
| 65. | 3.36 | Wibaux K-12 Schools / 1,067 |
| 66. | 3.36 | Townsend K-12 Schools / 4,841 |
| 67. | 3.35 | Hinsdale High School District / 474 |
| 68. | 3.34 | Valier Elementary School District / 1,156 |
| 69. | 3.34 | Greenfield Elementary School District / 704 |
| 70. | 3.34 | Greycliff Elementary School District / 239 |
| 71. | 3.33 | Spring Creek Elementary School District / 80 |
| 72. | 3.32 | North Star High School District / 1,156 |
| 73. | 3.32 | Smith Valley Elementary School District / 1,980 |
| 74. | 3.30 | Van Norman Elementary School District / 97 |
| 75. | 3.29 | Chester-Joplin-Inverness Elementary School District / 2,233 |
| 76. | 3.28 | Sand Springs Elementary School District / 130 |
| 77. | 3.27 | Target Range Elementary School District / 4,158 |
| 78. | 3.26 | Lustre Elementary School District / 251 |
| 79. | 3.25 | Ronan High School District / 8,214 |
| 79. | 3.25 | Ronan Elementary School District / 8,214 |
| 81. | 3.25 | Lennep Elementary School District / 61 |
| 82. | 3.24 | Seeley Lake Elementary School District / 1,746 |
| 83. | 3.24 | Harlowton Elementary School District / 1,800 |
| 84. | 3.24 | Hinsdale Elementary School District / 422 |
| 85. | 3.23 | Hysham K-12 Schools / 848 |
| 86. | 3.23 | Pioneer Elementary School District / 1,126 |
| 87. | 3.23 | Stanford K-12 Schools / 887 |
| 88. | 3.21 | Independent Elementary School District / 2,926 |
| 89. | 3.21 | Kinsey Elementary School District / 420 |
| 90. | 3.21 | Lockwood Elementary School District / 7,589 |
| 91. | 3.20 | Harlowton High School District / 1,908 |
| 92. | 3.20 | West Valley Elementary School District / 3,567 |
| 93. | 3.19 | South Stacey Elementary School District / 126 |
| 94. | 3.19 | Olney-Bissell Elementary School District / 949 |
| 95. | 3.19 | Belgrade Elementary School District / 19,900 |
| 96. | 3.18 | Springdale Elementary School District / 157 |
| 97. | 3.18 | Melstone High School District / 307 |
| 98. | 3.18 | Belgrade High School District / 20,130 |
| 99. | 3.17 | St. Ignatius K-12 Schools / 3,124 |
| 100. | 3.17 | Big Timber Elementary School District / 2,860 |
| 101. | 3.16 | Blue Creek Elementary School District / 2,472 |
| 102. | 3.16 | King Colony Elementary School District / 199 |
| 103. | 3.16 | Conrad High School District / 3,514 |
| 104. | 3.15 | Geraldine Elementary School District / 595 |
| 105. | 3.15 | Lolo Elementary School District / 4,621 |
| 106. | 3.13 | Bynum Elementary School District / 220 |
| 107. | 3.13 | Evergreen Elementary School District / 6,321 |
| 108. | 3.13 | Geraldine High School District / 635 |
| 109. | 3.13 | Elder Grove Elementary School District / 2,725 |
| 110. | 3.13 | Vida Elementary School District / 512 |
| 110. | 3.13 | Molt Elementary School District / 183 |
| 112. | 3.12 | Clinton Elementary School District / 2,044 |
| 113. | 3.12 | East Helena Elementary School District / 8,718 |
| 114. | 3.12 | Kalispell Elementary School District / 27,570 |
| 115. | 3.12 | Jordan Elementary School District / 702 |
| 116. | 3.12 | Havre Elementary School District / 12,351 |
| 117. | 3.12 | Havre High School District / 12,707 |
| 118. | 3.11 | Sweet Grass County High School District / 3,632 |
| 119. | 3.11 | Dodson Elementary School District / 286 |
| 120. | 3.10 | Luther Elementary School District / 444 |
| 121. | 3.09 | Conrad Elementary School District / 3,379 |
| 122. | 3.09 | North Star Elementary School District / 997 |
| 123. | 3.09 | Colstrip High School District / 2,520 |
| 123. | 3.09 | Colstrip Elementary School District / 2,520 |
| 125. | 3.09 | McLeod Elementary School District / 277 |
| 126. | 3.08 | Baker K-12 Schools / 2,360 |
| 127. | 3.08 | Davey Elementary School District / 64 |
| 128. | 3.08 | Garfield County High School District / 1,224 |
| 129. | 3.08 | Columbia Falls Elementary School District / 14,042 |
| 130. | 3.07 | Lone Rock Elementary School District / 3,176 |
| 131. | 3.07 | Circle High School District / 1,714 |
| 132. | 3.07 | Flathead High School District / 55,349 |
| 133. | 3.06 | Florence-Carlton K-12 Schools / 5,760 |
| 134. | 3.06 | Creston Elementary School District / 1,205 |
| 135. | 3.06 | Columbia Falls High School District / 14,488 |
| 136. | 3.06 | Deep Creek Elementary School District / 133 |
| 137. | 3.06 | Fair-Mont-Egan Elementary School District / 1,273 |
| 138. | 3.06 | Manhattan Elementary School District / 2,579 |
| 139. | 3.06 | Big Sandy Elementary School District / 1,349 |
| 140. | 3.05 | Cottonwood Elementary School District / 319 |
| 141. | 3.05 | Sun River Valley Elementary School District / 2,261 |
| 142. | 3.05 | Circle Elementary School District / 1,202 |
| 143. | 3.05 | Potomac Elementary School District / 1,164 |
| 144. | 3.05 | Amsterdam Elementary School District / 1,708 |
| 145. | 3.05 | Manhattan High School District / 4,322 |
| 146. | 3.04 | Centerville High School District / 1,597 |
| 147. | 3.04 | Swan River Elementary School District / 1,682 |
| 148. | 3.03 | Missoula High School District / 98,293 |
| 149. | 3.03 | Broadview High School District / 952 |
| 150. | 3.03 | Dixon Elementary School District / 679 |
| 151. | 3.03 | Dodson High School District / 341 |
| 152. | 3.03 | Centerville Elementary School District / 1,658 |
| 153. | 3.03 | Bloomfield Elementary School District / 115 |
| 154. | 3.03 | Hellgate Elementary School District / 12,009 |
| 155. | 3.02 | Simms High School District / 3,223 |
| 156. | 3.02 | Kila Elementary School District / 1,536 |
| 157. | 3.02 | Arlee High School District / 2,488 |
| 157. | 3.02 | Arlee Elementary School District / 2,488 |
| 159. | 3.02 | Golden Ridge Elementary School District / 178 |
| 160. | 3.01 | Noxon Elementary School District / 1,534 |
| 161. | 3.01 | Missoula Elementary School District / 68,124 |
| 162. | 3.01 | Bridger K-12 Schools / 1,382 |
| 163. | 3.01 | Lambert Elementary School District / 435 |
| 164. | 3.00 | Billings High School District / 125,086 |
| 165. | 3.00 | Basin Elementary School District / 180 |
| 165. | 3.00 | Lambert High School District / 440 |
| 167. | 3.00 | Sunburst K-12 Schools / 1,203 |
| 168. | 3.00 | Charlo High School District / 2,230 |
| 169. | 3.00 | Name N/A / 866,873 |
| 170. | 2.99 | Frenchtown K-12 Schools / 6,181 |
| 171. | 2.99 | Boulder Elementary School District / 2,429 |
| 172. | 2.99 | Forsyth Elementary School District / 2,502 |
| 173. | 2.99 | Canyon Creek Elementary School District / 2,143 |
| 174. | 2.99 | Brorson Elementary School District / 227 |
| 175. | 2.98 | Charlo Elementary School District / 1,551 |
| 176. | 2.98 | Forsyth High School District / 2,555 |
| 177. | 2.98 | Laurel Elementary School District / 11,231 |
| 178. | 2.97 | Shepherd Elementary School District / 3,261 |
| 178. | 2.97 | Shepherd High School District / 3,261 |
| 180. | 2.97 | Great Falls Elementary School District / 71,164 |
| 181. | 2.97 | Stevensville High School District / 10,237 |
| 182. | 2.97 | Great Falls High School District / 71,219 |
| 183. | 2.97 | Billings Elementary School District / 104,812 |
| 184. | 2.97 | Belt High School District / 2,003 |
| 185. | 2.97 | Roy K-12 Schools / 297 |
| 186. | 2.97 | Montana City Elementary School District / 2,554 |
| 187. | 2.96 | Anderson Elementary School District / 1,147 |
| 188. | 2.96 | Superior K-12 Schools / 2,443 |
| 189. | 2.96 | Froid Elementary School District / 489 |
| 189. | 2.96 | Froid High School District / 489 |
| 191. | 2.96 | Rau Elementary School District / 294 |
| 192. | 2.96 | Helena High School District / 59,916 |
| 193. | 2.96 | Broadview Elementary School District / 867 |
| 194. | 2.95 | Butte Elementary School District / 32,463 |
| 195. | 2.95 | Belt Elementary School District / 1,997 |
| 196. | 2.95 | Helena Elementary School District / 49,204 |
| 197. | 2.95 | Fairfield High School District / 1,832 |
| 198. | 2.95 | Lincoln K-12 Schools / 1,038 |
| 199. | 2.94 | Butte High School District / 33,769 |
| 200. | 2.94 | Laurel High School District / 10,728 |
| 201. | 2.94 | Carter Elementary School District / 114 |
| 201. | 2.94 | Knees Elementary School District / 107 |
| 203. | 2.94 | Vaughn Elementary School District / 962 |
| 204. | 2.94 | Park City Elementary School District / 2,431 |
| 205. | 2.93 | Cayuse Prairie Elementary School District / 2,698 |
| 206. | 2.93 | Fergus High School District / 9,230 |
| 207. | 2.93 | Kircher Elementary School District / 696 |
| 208. | 2.93 | Alberton K-12 Schools / 1,167 |
| 209. | 2.93 | Park City High School District / 2,226 |
| 210. | 2.93 | Twin Buttes Elementary School District / 84 |
| 211. | 2.93 | Lewistown Elementary School District / 9,022 |
| 212. | 2.92 | Custer County High School District / 11,548 |
| 213. | 2.92 | Stevensville Elementary School District / 7,061 |
| 214. | 2.92 | Ulm Elementary School District / 737 |
| 215. | 2.92 | Miles City Elementary School District / 9,973 |
| 216. | 2.92 | Three Forks High School District / 2,930 |
| 217. | 2.92 | Denton High School District / 721 |
| 218. | 2.92 | Three Forks Elementary School District / 2,958 |
| 218. | 2.92 | Choteau High School District / 3,127 |
| 220. | 2.92 | Malta K-12 Schools / 3,380 |
| 221. | 2.92 | Corvallis K-12 Schools / 7,173 |
| 222. | 2.91 | Melstone Elementary School District / 520 |
| 223. | 2.91 | Glasgow K-12 Schools / 4,913 |
| 224. | 2.91 | Geyser Elementary School District / 208 |
| 225. | 2.91 | Columbus High School District / 3,742 |
| 226. | 2.91 | De Smet Elementary School District / 559 |
| 227. | 2.90 | Joliet High School District / 2,347 |
| 228. | 2.90 | Woodman Elementary School District / 557 |
| 229. | 2.90 | Columbus Elementary School District / 3,537 |
| 230. | 2.90 | Powder River County High School District / 1,659 |
| 231. | 2.90 | Powell County High School District / 7,198 |
| 232. | 2.90 | Denton Elementary School District / 686 |
| 233. | 2.89 | Gold Creek Elementary School District / 274 |
| 234. | 2.89 | Ophir Elementary School District / 1,478 |
| 235. | 2.89 | Fromberg K-12 Schools / 1,262 |
| 236. | 2.89 | Pass Creek Elementary School District / 86 |
| 237. | 2.89 | Power Elementary School District / 520 |
| 238. | 2.89 | Nashua K-12 Schools / 905 |
| 239. | 2.88 | Whitefish High School District / 14,045 |
| 240. | 2.88 | Whitefish Elementary School District / 13,487 |
| 241. | 2.88 | Highwood Elementary School District / 562 |
| 242. | 2.87 | Highwood High School District / 530 |
| 243. | 2.87 | Power High School District / 526 |
| 244. | 2.87 | La Motte Elementary School District / 764 |
| 245. | 2.87 | Deer Creek Elementary School District / 1,591 |
| 246. | 2.87 | Rapelje Elementary School District / 289 |
| 247. | 2.86 | Reichle Elementary School District / 91 |
| 248. | 2.86 | Victor K-12 Schools / 3,668 |
| 249. | 2.85 | Savage High School District / 520 |
| 250. | 2.85 | Belfry K-12 Schools / 568 |
| 251. | 2.85 | Jefferson High School District / 7,975 |
| 252. | 2.85 | Grass Range Elementary School District / 405 |
| 253. | 2.85 | Harrison K-12 Schools / 783 |
| 254. | 2.84 | Bonner Elementary School District / 2,588 |
| 255. | 2.84 | Shields Valley Elementary School District / 1,625 |
| 255. | 2.84 | Shields Valley High School District / 1,625 |
| 257. | 2.84 | Dillon Elementary School District / 7,639 |
| 258. | 2.84 | Westby K-12 Schools / 352 |
| 259. | 2.83 | Bozeman High School District / 58,415 |
| 260. | 2.83 | Choteau Elementary School District / 2,584 |
| 261. | 2.83 | Bozeman Elementary School District / 51,052 |
| 262. | 2.83 | Eureka Elementary School District / 4,721 |
| 263. | 2.83 | Moore High School District / 483 |
| 263. | 2.83 | Moore Elementary School District / 483 |
| 265. | 2.83 | Broadus Elementary School District / 1,290 |
| 266. | 2.83 | Divide Elementary School District / 157 |
| 267. | 2.83 | Dutton/Brady K-12 Schools / 1,012 |
| 268. | 2.83 | Savage Elementary School District / 522 |
| 269. | 2.83 | Deer Lodge Elementary School District / 5,602 |
| 270. | 2.82 | Grass Range High School District / 422 |
| 271. | 2.82 | Turner Elementary School District / 361 |
| 271. | 2.82 | Turner High School District / 361 |
| 273. | 2.82 | Fortine Elementary School District / 812 |
| 274. | 2.81 | Roberts K-12 Schools / 597 |
| 275. | 2.81 | Monforton Elementary School District / 1,953 |
| 276. | 2.81 | Livingston Elementary School District / 10,375 |
| 277. | 2.80 | Beaverhead County High School District / 8,678 |
| 278. | 2.80 | West Yellowstone K-12 School District / 1,770 |
| 279. | 2.80 | Lincoln County High School District / 6,260 |
| 280. | 2.80 | Twin Bridges K-12 Schools / 1,501 |
| 281. | 2.80 | Sunset Elementary School District / 185 |
| 281. | 2.80 | Lindsay Elementary School District / 407 |
| 283. | 2.80 | Gallatin Gateway Elementary School District / 1,579 |
| 284. | 2.80 | Cottonwood Elementary School District / 171 |
| 285. | 2.79 | Rapelje High School District / 387 |
| 286. | 2.79 | Park High School District / 12,485 |
| 287. | 2.79 | Absarokee Elementary School District / 1,599 |
| 288. | 2.78 | Red Lodge High School District / 3,838 |
| 289. | 2.78 | Bigfork High School District / 8,219 |
| 290. | 2.78 | Hamilton K-12 Schools / 10,976 |
| 291. | 2.77 | Drummond Elementary School District / 1,067 |
| 292. | 2.77 | Ramsay Elementary School District / 1,075 |
| 293. | 2.77 | Camas Prairie Elementary School District / 216 |
| 293. | 2.77 | Cardwell Elementary School District / 421 |
| 295. | 2.77 | Grant Elementary School District / 120 |
| 296. | 2.76 | Deer Park Elementary School District / 1,018 |
| 297. | 2.76 | Pine Grove Elementary School District / 79 |
| 298. | 2.76 | Red Lodge Elementary School District / 3,324 |
| 299. | 2.75 | Ekalaka Elementary School District / 992 |
| 300. | 2.75 | Chinook Elementary School District / 1,947 |
| 301. | 2.75 | St. Regis K-12 Schools / 1,256 |
| 302. | 2.75 | Opheim K-12 Schools / 385 |
| 302. | 2.75 | Hobson K-12 Schools / 751 |
| 304. | 2.75 | Sidney High School District / 7,099 |
| 305. | 2.74 | Drummond High School District / 1,320 |
| 306. | 2.74 | Somers Elementary School District / 5,135 |
| 307. | 2.74 | Augusta High School District / 689 |
| 308. | 2.74 | Huntley Project K-12 Schools / 3,646 |
| 309. | 2.74 | Chinook High School District / 2,332 |
| 310. | 2.74 | Arrowhead Elementary School District / 1,625 |
| 311. | 2.73 | Polson High School District / 10,969 |
| 312. | 2.72 | Fort Benton High School District / 2,044 |
| 313. | 2.72 | Cascade High School District / 2,520 |
| 314. | 2.72 | Sidney Elementary School District / 6,474 |
| 315. | 2.72 | Noxon High School District / 2,415 |
| 316. | 2.72 | Fort Benton Elementary School District / 1,766 |
| 317. | 2.72 | Polson Elementary School District / 9,910 |
| 318. | 2.72 | Bigfork Elementary School District / 6,349 |
| 319. | 2.72 | Joliet Elementary School District / 1,844 |
| 320. | 2.71 | Warrick Elementary School District / 19 |
| 321. | 2.71 | Plevna K-12 Schools / 453 |
| 322. | 2.71 | Hot Springs High School District / 1,572 |
| 323. | 2.71 | McCormick Elementary School District / 395 |
| 324. | 2.70 | Zurich Elementary School District / 284 |
| 325. | 2.70 | Carter County High School District / 1,289 |
| 326. | 2.70 | Hot Springs Elementary School District / 1,356 |
| 327. | 2.69 | Absarokee High School District / 2,124 |
| 328. | 2.69 | Shawmut Elementary School District / 108 |
| 329. | 2.69 | Marion Elementary School District / 994 |
| 330. | 2.68 | Landusky Elementary School District / 55 |
| 331. | 2.68 | Fairfield Elementary School District / 956 |
| 332. | 2.68 | Clancy Elementary School District / 2,812 |
| 333. | 2.68 | Winifred K-12 Schools / 302 |
| 333. | 2.68 | Cottonwood Elementary School District / 215 |
| 335. | 2.68 | Terry K-12 Schools / 1,089 |
| 336. | 2.67 | Reedpoint High School District / 502 |
| 337. | 2.67 | Dawson High School District / 8,432 |
| 338. | 2.67 | Medicine Lake K-12 Schools / 761 |
| 339. | 2.66 | Thompson Falls Elementary School District / 3,463 |
| 339. | 2.66 | Thompson Falls High School District / 3,463 |
| 341. | 2.66 | Swan Lake-Salmon Elementary School District / 293 |
| 342. | 2.66 | Shelby Elementary School District / 3,688 |
| 343. | 2.66 | Pleasant Valley Elementary School District / 93 |
| 344. | 2.65 | Lima K-12 Schools / 454 |
| 345. | 2.65 | Melville Elementary School District / 198 |
| 346. | 2.65 | Scobey K-12 Schools / 1,492 |
| 347. | 2.64 | Fairview High School District / 1,439 |
| 348. | 2.64 | Fairview Elementary School District / 1,430 |
| 349. | 2.63 | Trego Elementary School District / 727 |
| 350. | 2.63 | Trinity Elementary School District / 1,408 |
| 351. | 2.63 | Whitehall High School District / 3,638 |
| 352. | 2.63 | Elysian Elementary School District / 713 |
| 353. | 2.63 | Rosebud Elementary School District / 355 |
| 354. | 2.63 | Shelby High School District / 3,940 |
| 355. | 2.62 | Winnett K-12 Schools / 598 |
| 356. | 2.62 | Bear Paw Elementary School District / 101 |
| 357. | 2.61 | Cascade Elementary School District / 1,650 |
| 358. | 2.61 | Custer K-12 Schools / 445 |
| 359. | 2.61 | Whitehall Elementary School District / 3,161 |
| 360. | 2.61 | Rosebud High School District / 371 |
| 361. | 2.61 | Hall Elementary School District / 253 |
| 362. | 2.60 | Glendive Elementary School District / 6,406 |
| 363. | 2.60 | Hawks Home Elementary School District / 122 |
| 363. | 2.60 | Malmborg Elementary School District / 227 |
| 365. | 2.60 | Richey High School District / 501 |
| 366. | 2.59 | Reedpoint Elementary School District / 555 |
| 367. | 2.58 | Geyser High School District / 317 |
| 368. | 2.58 | Fishtail Elementary School District / 363 |
| 369. | 2.57 | Richey Elementary School District / 418 |
| 370. | 2.57 | Upper West Shore Elementary School District / 698 |
| 371. | 2.56 | Saco Elementary School District / 412 |
| 372. | 2.56 | Ennis K-12 Schools / 2,975 |
| 373. | 2.55 | Philipsburg K-12 Schools / 1,724 |
| 374. | 2.55 | Jackson Elementary School District / 115 |
| 375. | 2.55 | Plains Elementary School District / 2,934 |
| 376. | 2.55 | Darby K-12 Schools / 3,584 |
| 377. | 2.55 | Wise River Elementary School District / 357 |
| 378. | 2.54 | Judith Gap Elementary School District / 280 |
| 378. | 2.54 | Judith Gap High School District / 280 |
| 380. | 2.54 | Plentywood K-12 Schools / 2,392 |
| 381. | 2.53 | Plains High School District / 3,254 |
| 382. | 2.53 | Troy Elementary School District / 2,786 |
| 383. | 2.52 | Troy High School District / 3,505 |
| 384. | 2.51 | S H Elementary School District / 112 |
| 385. | 2.50 | Gardiner Elementary School District / 1,809 |
| 386. | 2.50 | Birney Elementary School District / 117 |
| 387. | 2.49 | Gardiner High School District / 1,881 |
| 388. | 2.48 | Wisdom Elementary School District / 325 |
| 389. | 2.48 | Libby K-12 Schools / 9,742 |
| 390. | 2.48 | Augusta Elementary School District / 594 |
| 391. | 2.48 | Roundup High School District / 4,041 |
| 392. | 2.47 | Roundup Elementary School District / 3,881 |
| 393. | 2.47 | Anaconda Elementary School District / 9,079 |
| 394. | 2.47 | Anaconda High School District / 9,149 |
| 395. | 2.46 | Alzada Elementary School District / 175 |
| 396. | 2.46 | Wolf Creek Elementary School District / 586 |
| 397. | 2.45 | Ryegate K-12 Schools / 334 |
| 398. | 2.44 | Pine Creek Elementary School District / 333 |
| 399. | 2.43 | S Y Elementary School District / 50 |
| 399. | 2.43 | Ayers Elementary School District / 17 |
| 401. | 2.42 | Swan Valley Elementary School District / 433 |
| 402. | 2.41 | Cohagen Elementary School District / 79 |
| 403. | 2.41 | Ovando Elementary School District / 326 |
| 404. | 2.40 | Springhill Elementary School District / 159 |
| 405. | 2.39 | Spring Creek Elementary School District / 61 |
| 406. | 2.39 | Saco High School District / 360 |
| 407. | 2.38 | Big Dry Creek Elementary School District / 41 |
| 408. | 2.38 | Sylvanite Elementary School District / 139 |
| 409. | 2.36 | West Glacier Elementary School District / 446 |
| 410. | 2.35 | Sheridan Elementary School District / 1,618 |
| 411. | 2.34 | Galata Elementary School District / 252 |
| 412. | 2.33 | Paradise Elementary School District / 320 |
| 413. | 2.33 | Sheridan High School District / 1,910 |
| 414. | 2.31 | Trout Creek Elementary School District / 881 |
| 415. | 2.31 | Benton Lake Elementary School District / 65 |
| 416. | 2.30 | Whitlash Elementary School District / 29 |
| 417. | 2.25 | Spring Creek Colony Elementary School District / 9 |
| 418. | 2.25 | Alder Elementary School District / 292 |
| 419. | 2.18 | Cooke City Elementary School District / 72 |
| 420. | 2.17 | Yaak Elementary School District / 185 |
| 421. | 2.16 | Peerless K-12 Schools / 157 |
| 422. | 2.16 | Polaris Elementary School District / 101 |
| 423. | 2.15 | Raynesford Elementary School District / 109 |
| 424. | 2.14 | Nye Elementary School District / 232 |
| 425. | 2.14 | Melrose Elementary School District / 74 |
| 426. | 2.13 | Kester Elementary School District / 26 |
| 427. | 2.06 | Cleveland Elementary School District / 54 |
Please note that we only rank locations with 'Average Family Size' data. The rank above might not be a complete list. Locations without 'Average Family Size' 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.
