| Rank | Average Household Size ▼ | School District / Population |
| 1. | 4.40 | North Harlem Colony Elementary School District / 44 |
| 2. | 4.06 | Lame Deer Elementary School District / 2,771 |
| 3. | 4.04 | Heart Butte K-12 Schools / 748 |
| 4. | 4.03 | Liberty Elementary School District / 234 |
| 5. | 3.97 | Rocky Boy Elementary School District / 3,005 |
| 6. | 3.93 | Rocky Boy High School District / 1,784 |
| 7. | 3.76 | Gildford Colony Elementary School District / 129 |
| 8. | 3.75 | Lodge Grass Elementary School District / 1,774 |
| 9. | 3.69 | Lodge Grass High School District / 2,229 |
| 10. | 3.66 | Brockton High School District / 556 |
| 10. | 3.66 | Brockton Elementary School District / 556 |
| 12. | 3.61 | Lame Deer High School District / 5,376 |
| 13. | 3.60 | Yellowstone Academy Elementary School District / 75 |
| 14. | 3.49 | Wyola Elementary School District / 455 |
| 15. | 3.44 | Plenty Coups High School District / 732 |
| 15. | 3.44 | Pryor Elementary School District / 732 |
| 17. | 3.33 | Hays-Lodge Pole K-12 Schools / 1,322 |
| 18. | 3.31 | Browning Elementary School District / 8,320 |
| 19. | 3.29 | Box Elder High School District / 421 |
| 19. | 3.29 | Box Elder Elementary School District / 421 |
| 21. | 3.25 | Ayers Elementary School District / 84 |
| 21. | 3.25 | Browning High School District / 8,869 |
| 23. | 3.22 | Poplar High School District / 3,523 |
| 23. | 3.22 | Poplar Elementary School District / 3,523 |
| 25. | 3.16 | Frazer Elementary School District / 544 |
| 26. | 3.13 | Miami Elementary School District / 255 |
| 27. | 3.07 | Gold Creek Elementary School District / 231 |
| 28. | 3.06 | Frazer High School District / 743 |
| 29. | 3.03 | Hardin Elementary School District / 9,478 |
| 29. | 3.03 | Morin Elementary School District / 403 |
| 31. | 2.97 | Harlem Elementary School District / 2,405 |
| 32. | 2.96 | Harlem High School District / 2,533 |
| 33. | 2.95 | Ashland Elementary School District / 1,275 |
| 34. | 2.94 | Big Sandy High School District / 2,415 |
| 34. | 2.94 | Hardin High School District / 8,178 |
| 36. | 2.87 | Independent Elementary School District / 2,624 |
| 37. | 2.86 | Wolf Point Elementary School District / 4,205 |
| 37. | 2.86 | West Valley Elementary School District / 3,770 |
| 39. | 2.84 | Wolf Point High School District / 4,635 |
| 39. | 2.84 | De Smet Elementary School District / 857 |
| 39. | 2.84 | Montana City Elementary School District / 2,963 |
| 42. | 2.82 | Molt Elementary School District / 192 |
| 43. | 2.78 | Smith Valley Elementary School District / 1,902 |
| 43. | 2.78 | Malmborg Elementary School District / 206 |
| 45. | 2.76 | Lustre Elementary School District / 199 |
| 46. | 2.75 | Frenchtown K-12 Schools / 6,582 |
| 47. | 2.73 | Kinsey Elementary School District / 496 |
| 48. | 2.71 | Elder Grove Elementary School District / 3,014 |
| 49. | 2.70 | Shepherd Elementary School District / 3,881 |
| 49. | 2.70 | Shepherd High School District / 3,881 |
| 51. | 2.69 | Ronan High School District / 8,645 |
| 51. | 2.69 | Valley View Elementary School District / 253 |
| 51. | 2.69 | Ronan Elementary School District / 8,645 |
| 51. | 2.69 | Rau Elementary School District / 336 |
| 55. | 2.68 | Broadview High School District / 927 |
| 55. | 2.68 | Raynesford Elementary School District / 142 |
| 57. | 2.67 | Frontier Elementary School District / 430 |
| 57. | 2.67 | Amsterdam Elementary School District / 1,808 |
| 57. | 2.67 | Anderson Elementary School District / 1,154 |
| 60. | 2.66 | Helena Flats Elementary School District / 1,844 |
| 60. | 2.66 | Lolo Elementary School District / 5,126 |
| 62. | 2.65 | Pioneer Elementary School District / 913 |
| 62. | 2.65 | Blue Creek Elementary School District / 2,111 |
| 64. | 2.63 | Lockwood Elementary School District / 7,865 |
| 65. | 2.62 | Broadview Elementary School District / 838 |
| 65. | 2.62 | Belgrade High School District / 20,094 |
| 65. | 2.62 | South Stacey Elementary School District / 97 |
| 65. | 2.62 | Park City Elementary School District / 2,282 |
| 65. | 2.62 | Belgrade Elementary School District / 19,906 |
| 70. | 2.61 | Corvallis K-12 Schools / 7,645 |
| 70. | 2.61 | S Y Elementary School District / 73 |
| 70. | 2.61 | Park City High School District / 2,082 |
| 70. | 2.61 | Fair-Mont-Egan Elementary School District / 1,133 |
| 70. | 2.61 | Charlo Elementary School District / 1,332 |
| 75. | 2.60 | Florence-Carlton K-12 Schools / 5,328 |
| 76. | 2.59 | St. Ignatius K-12 Schools / 3,276 |
| 76. | 2.59 | East Glacier Park Elementary School District / 549 |
| 78. | 2.58 | Charlo High School District / 1,792 |
| 78. | 2.58 | Cayuse Prairie Elementary School District / 2,440 |
| 78. | 2.58 | Melville Elementary School District / 219 |
| 81. | 2.57 | Deer Park Elementary School District / 1,000 |
| 81. | 2.57 | Arlee Elementary School District / 2,530 |
| 81. | 2.57 | Colstrip High School District / 2,493 |
| 81. | 2.57 | Colstrip Elementary School District / 2,493 |
| 81. | 2.57 | Greenfield Elementary School District / 525 |
| 81. | 2.57 | Arlee High School District / 2,530 |
| 87. | 2.56 | Lone Rock Elementary School District / 3,037 |
| 87. | 2.56 | Canyon Creek Elementary School District / 1,921 |
| 87. | 2.56 | Kila Elementary School District / 1,924 |
| 90. | 2.55 | Hawks Home Elementary School District / 107 |
| 90. | 2.55 | Jefferson High School District / 7,928 |
| 90. | 2.55 | Kester Elementary School District / 79 |
| 93. | 2.54 | Evergreen Elementary School District / 6,002 |
| 93. | 2.54 | East Helena Elementary School District / 8,680 |
| 95. | 2.53 | Deep Creek Elementary School District / 114 |
| 96. | 2.52 | Cottonwood Elementary School District / 358 |
| 96. | 2.52 | Manhattan High School District / 4,564 |
| 98. | 2.51 | Kircher Elementary School District / 797 |
| 98. | 2.51 | Clinton Elementary School District / 2,354 |
| 98. | 2.51 | Clancy Elementary School District / 2,730 |
| 101. | 2.50 | Zurich Elementary School District / 308 |
| 101. | 2.50 | Moore High School District / 528 |
| 101. | 2.50 | Laurel High School District / 10,696 |
| 101. | 2.50 | Moore Elementary School District / 528 |
| 101. | 2.50 | Ross Elementary School District / 25 |
| 101. | 2.50 | Sand Springs Elementary School District / 90 |
| 101. | 2.50 | Golden Ridge Elementary School District / 160 |
| 101. | 2.50 | Laurel Elementary School District / 11,043 |
| 109. | 2.49 | Highwood High School District / 455 |
| 109. | 2.49 | Camas Prairie Elementary School District / 172 |
| 109. | 2.49 | Three Forks High School District / 3,480 |
| 109. | 2.49 | Dixon Elementary School District / 460 |
| 109. | 2.49 | King Colony Elementary School District / 323 |
| 109. | 2.49 | Ulm Elementary School District / 726 |
| 109. | 2.49 | Power Elementary School District / 454 |
| 109. | 2.49 | Lindsay Elementary School District / 338 |
| 109. | 2.49 | Fairfield High School District / 1,900 |
| 118. | 2.48 | Power High School District / 484 |
| 118. | 2.48 | Big Dry Creek Elementary School District / 57 |
| 120. | 2.47 | Three Forks Elementary School District / 3,509 |
| 120. | 2.47 | Deer Creek Elementary School District / 1,684 |
| 120. | 2.47 | Trail Creek Elementary School District / 42 |
| 120. | 2.47 | Creston Elementary School District / 1,180 |
| 120. | 2.47 | Sunburst K-12 Schools / 1,232 |
| 120. | 2.47 | Somers Elementary School District / 6,311 |
| 120. | 2.47 | Geyser High School District / 482 |
| 120. | 2.47 | Huntley Project K-12 Schools / 4,244 |
| 128. | 2.46 | Spring Creek Elementary School District / 101 |
| 128. | 2.46 | Highwood Elementary School District / 464 |
| 128. | 2.46 | Columbia Falls Elementary School District / 14,331 |
| 128. | 2.46 | Centerville Elementary School District / 1,381 |
| 132. | 2.45 | Fairfield Elementary School District / 1,245 |
| 132. | 2.45 | Grant Elementary School District / 142 |
| 132. | 2.45 | Sun River Valley Elementary School District / 2,120 |
| 132. | 2.45 | Flathead High School District / 57,390 |
| 132. | 2.45 | Ramsay Elementary School District / 1,265 |
| 132. | 2.45 | Greycliff Elementary School District / 348 |
| 132. | 2.45 | Manhattan Elementary School District / 2,703 |
| 139. | 2.44 | Brorson Elementary School District / 178 |
| 139. | 2.44 | Centerville High School District / 1,338 |
| 139. | 2.44 | Columbia Falls High School District / 14,817 |
| 139. | 2.44 | La Motte Elementary School District / 843 |
| 139. | 2.44 | Simms High School District / 3,030 |
| 144. | 2.43 | Cardwell Elementary School District / 409 |
| 144. | 2.43 | Whitewater K-12 Schools / 199 |
| 144. | 2.43 | Cottonwood Elementary School District / 233 |
| 144. | 2.43 | Cohagen Elementary School District / 102 |
| 144. | 2.43 | Rapelje High School District / 343 |
| 144. | 2.43 | Columbus High School District / 3,825 |
| 144. | 2.43 | Savage Elementary School District / 586 |
| 151. | 2.42 | Hinsdale Elementary School District / 407 |
| 151. | 2.42 | Savage High School District / 606 |
| 151. | 2.42 | Columbus Elementary School District / 3,625 |
| 151. | 2.42 | Vaughn Elementary School District / 910 |
| 151. | 2.42 | Trinity Elementary School District / 1,592 |
| 151. | 2.42 | Pine Grove Elementary School District / 87 |
| 157. | 2.41 | Pendroy Elementary School District / 312 |
| 157. | 2.41 | Marion Elementary School District / 1,547 |
| 157. | 2.41 | Turner Elementary School District / 306 |
| 160. | 2.40 | Joliet High School District / 2,386 |
| 160. | 2.40 | Turner High School District / 303 |
| 160. | 2.40 | Cut Bank Elementary School District / 4,406 |
| 160. | 2.40 | Helmville Elementary School District / 218 |
| 160. | 2.40 | Cut Bank High School District / 4,530 |
| 160. | 2.40 | Hinsdale High School District / 446 |
| 160. | 2.40 | Rapelje Elementary School District / 240 |
| 160. | 2.40 | Bonner Elementary School District / 2,566 |
| 168. | 2.39 | Hall Elementary School District / 294 |
| 168. | 2.39 | Fairview Elementary School District / 1,321 |
| 168. | 2.39 | Geyser Elementary School District / 340 |
| 168. | 2.39 | Fairview High School District / 1,401 |
| 168. | 2.39 | Stevensville High School District / 9,662 |
| 168. | 2.39 | Lambert Elementary School District / 385 |
| 168. | 2.39 | Dodson Elementary School District / 306 |
| 168. | 2.39 | Target Range Elementary School District / 3,531 |
| 176. | 2.38 | Springdale Elementary School District / 131 |
| 176. | 2.38 | Lambert High School District / 347 |
| 176. | 2.38 | Winifred K-12 Schools / 540 |
| 176. | 2.38 | Jackson Elementary School District / 152 |
| 180. | 2.37 | Culbertson High School District / 917 |
| 180. | 2.37 | Melstone High School District / 287 |
| 180. | 2.37 | Benton Lake Elementary School District / 83 |
| 180. | 2.37 | Culbertson Elementary School District / 1,022 |
| 184. | 2.36 | Joliet Elementary School District / 2,039 |
| 184. | 2.36 | Gallatin Gateway Elementary School District / 1,565 |
| 184. | 2.36 | Billings High School District / 127,987 |
| 187. | 2.35 | Potomac Elementary School District / 1,075 |
| 187. | 2.35 | Plevna K-12 Schools / 420 |
| 187. | 2.35 | Rosebud Elementary School District / 437 |
| 187. | 2.35 | Hellgate Elementary School District / 12,805 |
| 191. | 2.34 | Victor K-12 Schools / 3,486 |
| 191. | 2.34 | Cascade High School District / 2,792 |
| 191. | 2.34 | Chester-Joplin-Inverness High School District / 2,463 |
| 191. | 2.34 | Luther Elementary School District / 395 |
| 191. | 2.34 | Havre Elementary School District / 12,252 |
| 191. | 2.34 | Woodman Elementary School District / 451 |
| 191. | 2.34 | Havre High School District / 12,655 |
| 198. | 2.33 | Olney-Bissell Elementary School District / 1,158 |
| 198. | 2.33 | Judith Gap High School District / 336 |
| 198. | 2.33 | Warrick Elementary School District / 28 |
| 198. | 2.33 | Judith Gap Elementary School District / 336 |
| 198. | 2.33 | Whitehall High School District / 3,913 |
| 198. | 2.33 | Townsend K-12 Schools / 5,046 |
| 198. | 2.33 | Dodson High School District / 350 |
| 198. | 2.33 | Whitehall Elementary School District / 3,443 |
| 206. | 2.32 | Great Falls Elementary School District / 72,018 |
| 206. | 2.32 | Polson High School District / 11,105 |
| 206. | 2.32 | Valier Elementary School District / 981 |
| 206. | 2.32 | Great Falls High School District / 72,159 |
| 206. | 2.32 | Polson Elementary School District / 9,949 |
| 206. | 2.32 | Bainville K-12 Schools / 364 |
| 206. | 2.32 | Swan River Elementary School District / 1,551 |
| 213. | 2.31 | Sidney High School District / 7,392 |
| 213. | 2.31 | Reedpoint Elementary School District / 648 |
| 213. | 2.31 | Rosebud High School District / 459 |
| 213. | 2.31 | Billings Elementary School District / 107,977 |
| 213. | 2.31 | Baker K-12 Schools / 2,470 |
| 213. | 2.31 | Geraldine Elementary School District / 625 |
| 213. | 2.31 | Kalispell Elementary School District / 27,692 |
| 213. | 2.31 | Roy K-12 Schools / 304 |
| 213. | 2.31 | Cleveland Elementary School District / 81 |
| 213. | 2.31 | Stevensville Elementary School District / 6,625 |
| 213. | 2.31 | Lavina K-12 Schools / 379 |
| 213. | 2.31 | Helena High School District / 61,307 |
| 213. | 2.31 | Monforton Elementary School District / 2,039 |
| 226. | 2.30 | Reedpoint High School District / 584 |
| 226. | 2.30 | Shawmut Elementary School District / 108 |
| 226. | 2.30 | Carter Elementary School District / 168 |
| 226. | 2.30 | Belt Elementary School District / 2,106 |
| 230. | 2.29 | Geraldine High School District / 647 |
| 230. | 2.29 | Boulder Elementary School District / 2,000 |
| 230. | 2.29 | Sidney Elementary School District / 6,817 |
| 230. | 2.29 | Bridger K-12 Schools / 1,304 |
| 230. | 2.29 | Big Sandy Elementary School District / 1,166 |
| 230. | 2.29 | Roberts K-12 Schools / 890 |
| 230. | 2.29 | Drummond High School District / 1,236 |
| 230. | 2.29 | Belt High School District / 2,008 |
| 230. | 2.29 | Whitlash Elementary School District / 39 |
| 230. | 2.29 | North Star High School District / 1,112 |
| 230. | 2.29 | Biddle Elementary School District / 117 |
| 241. | 2.28 | Avon Elementary School District / 239 |
| 241. | 2.28 | Chester-Joplin-Inverness Elementary School District / 2,190 |
| 241. | 2.28 | Valier High School District / 1,355 |
| 241. | 2.28 | Eureka Elementary School District / 4,902 |
| 241. | 2.28 | Elysian Elementary School District / 1,084 |
| 241. | 2.28 | Harlowton Elementary School District / 1,791 |
| 241. | 2.28 | Helena Elementary School District / 50,423 |
| 241. | 2.28 | Harlowton High School District / 1,899 |
| 241. | 2.28 | Bozeman High School District / 59,653 |
| 241. | 2.28 | Conrad High School District / 3,640 |
| 251. | 2.27 | Missoula High School District / 100,417 |
| 251. | 2.27 | Lincoln County High School District / 6,260 |
| 251. | 2.27 | Garfield County High School District / 1,206 |
| 251. | 2.27 | Malta K-12 Schools / 3,211 |
| 251. | 2.27 | Dawson High School District / 8,479 |
| 251. | 2.27 | Bozeman Elementary School District / 51,460 |
| 251. | 2.27 | Cascade Elementary School District / 1,952 |
| 251. | 2.27 | Nashua K-12 Schools / 891 |
| 259. | 2.26 | Powder River County High School District / 1,759 |
| 259. | 2.26 | Westby K-12 Schools / 330 |
| 259. | 2.26 | Conrad Elementary School District / 3,385 |
| 259. | 2.26 | Alberton K-12 Schools / 1,371 |
| 259. | 2.26 | Fromberg K-12 Schools / 1,060 |
| 259. | 2.26 | Sweet Grass County High School District / 3,559 |
| 259. | 2.26 | Drummond Elementary School District / 942 |
| 266. | 2.25 | Whitefish Elementary School District / 12,979 |
| 266. | 2.25 | Twin Bridges K-12 Schools / 1,491 |
| 268. | 2.24 | Trego Elementary School District / 588 |
| 268. | 2.24 | Custer County High School District / 11,699 |
| 268. | 2.24 | North Star Elementary School District / 966 |
| 268. | 2.24 | Whitefish High School District / 13,656 |
| 268. | 2.24 | Lima K-12 Schools / 508 |
| 273. | 2.23 | Noxon Elementary School District / 1,421 |
| 273. | 2.23 | McLeod Elementary School District / 223 |
| 273. | 2.23 | Powell County High School District / 7,226 |
| 273. | 2.23 | Circle Elementary School District / 1,317 |
| 273. | 2.23 | Reichle Elementary School District / 127 |
| 278. | 2.22 | Harrison K-12 Schools / 658 |
| 278. | 2.22 | Butte Elementary School District / 32,592 |
| 278. | 2.22 | Butte High School District / 34,152 |
| 278. | 2.22 | Circle High School District / 1,734 |
| 278. | 2.22 | Big Timber Elementary School District / 2,697 |
| 278. | 2.22 | Plains Elementary School District / 3,082 |
| 284. | 2.21 | Pass Creek Elementary School District / 95 |
| 284. | 2.21 | St. Regis K-12 Schools / 1,247 |
| 284. | 2.21 | Denton Elementary School District / 527 |
| 284. | 2.21 | Dillon Elementary School District / 7,757 |
| 284. | 2.21 | Denton High School District / 585 |
| 284. | 2.21 | Bigfork High School District / 7,462 |
| 284. | 2.21 | Thompson Falls High School District / 3,556 |
| 284. | 2.21 | Davey Elementary School District / 62 |
| 284. | 2.21 | Missoula Elementary School District / 68,646 |
| 284. | 2.21 | Fortine Elementary School District / 770 |
| 284. | 2.21 | Thompson Falls Elementary School District / 3,556 |
| 284. | 2.21 | Deer Lodge Elementary School District / 5,818 |
| 296. | 2.20 | Shelby Elementary School District / 3,829 |
| 296. | 2.20 | Belfry K-12 Schools / 610 |
| 296. | 2.20 | Miles City Elementary School District / 9,934 |
| 296. | 2.20 | Ringling Elementary School District / 66 |
| 296. | 2.20 | Noxon High School District / 2,551 |
| 296. | 2.20 | Upper West Shore Elementary School District / 903 |
| 296. | 2.20 | Winnett K-12 Schools / 494 |
| 296. | 2.20 | Roundup Elementary School District / 4,109 |
| 296. | 2.20 | Grass Range High School District / 594 |
| 296. | 2.20 | Glendive Elementary School District / 6,441 |
| 296. | 2.20 | Broadus Elementary School District / 1,371 |
| 296. | 2.20 | Elliston Elementary School District / 339 |
| 308. | 2.19 | Bigfork Elementary School District / 5,747 |
| 308. | 2.19 | Glasgow K-12 Schools / 4,951 |
| 308. | 2.19 | Shelby High School District / 4,092 |
| 308. | 2.19 | Plains High School District / 3,425 |
| 308. | 2.19 | Libby K-12 Schools / 9,844 |
| 308. | 2.19 | Sunset Elementary School District / 212 |
| 308. | 2.19 | Beaverhead County High School District / 8,738 |
| 315. | 2.18 | Saco High School District / 493 |
| 315. | 2.18 | Roundup High School District / 4,246 |
| 315. | 2.18 | Absarokee Elementary School District / 1,865 |
| 315. | 2.18 | Superior K-12 Schools / 2,275 |
| 315. | 2.18 | Chinook High School District / 2,333 |
| 315. | 2.18 | Stanford K-12 Schools / 818 |
| 315. | 2.18 | Saco Elementary School District / 532 |
| 322. | 2.17 | Carter County High School District / 1,144 |
| 322. | 2.17 | Froid High School District / 430 |
| 322. | 2.17 | McCormick Elementary School District / 351 |
| 322. | 2.17 | Jordan Elementary School District / 661 |
| 322. | 2.17 | Darby K-12 Schools / 4,042 |
| 322. | 2.17 | Trout Creek Elementary School District / 1,130 |
| 322. | 2.17 | Wibaux K-12 Schools / 1,017 |
| 322. | 2.17 | Forsyth High School District / 2,585 |
| 322. | 2.17 | Springhill Elementary School District / 115 |
| 322. | 2.17 | Forsyth Elementary School District / 2,525 |
| 322. | 2.17 | Dutton/Brady K-12 Schools / 981 |
| 322. | 2.17 | Vida Elementary School District / 417 |
| 322. | 2.17 | Divide Elementary School District / 180 |
| 322. | 2.17 | Deerfield Elementary School District / 58 |
| 322. | 2.17 | Froid Elementary School District / 430 |
| 337. | 2.16 | Livingston Elementary School District / 10,406 |
| 337. | 2.16 | Richey Elementary School District / 417 |
| 337. | 2.16 | Basin Elementary School District / 235 |
| 337. | 2.16 | Shields Valley High School District / 1,628 |
| 337. | 2.16 | Shields Valley Elementary School District / 1,628 |
| 337. | 2.16 | Troy Elementary School District / 2,850 |
| 343. | 2.15 | Scobey K-12 Schools / 1,603 |
| 343. | 2.15 | Hobson K-12 Schools / 738 |
| 343. | 2.15 | Custer K-12 Schools / 361 |
| 343. | 2.15 | Ophir Elementary School District / 2,153 |
| 343. | 2.15 | Fort Benton High School District / 2,296 |
| 343. | 2.15 | Grass Range Elementary School District / 510 |
| 343. | 2.15 | Melstone Elementary School District / 484 |
| 343. | 2.15 | Choteau High School District / 3,118 |
| 343. | 2.15 | Fergus High School District / 9,002 |
| 343. | 2.15 | Seeley Lake Elementary School District / 2,054 |
| 343. | 2.15 | Ekalaka Elementary School District / 878 |
| 354. | 2.14 | Fort Benton Elementary School District / 1,890 |
| 354. | 2.14 | Richey High School District / 487 |
| 354. | 2.14 | Medicine Lake K-12 Schools / 620 |
| 354. | 2.14 | Hamilton K-12 Schools / 11,122 |
| 354. | 2.14 | Park High School District / 12,795 |
| 354. | 2.14 | Galata Elementary School District / 263 |
| 354. | 2.14 | Hysham K-12 Schools / 718 |
| 354. | 2.14 | Chinook Elementary School District / 1,888 |
| 354. | 2.14 | Lewistown Elementary School District / 8,626 |
| 354. | 2.14 | Choteau Elementary School District / 2,582 |
| 364. | 2.13 | White Sulphur Springs High School District / 1,891 |
| 364. | 2.13 | Willow Creek Elementary School District / 338 |
| 364. | 2.13 | Troy High School District / 3,583 |
| 364. | 2.13 | White Sulphur Springs Elementary School District / 1,766 |
| 368. | 2.12 | Willow Creek High School District / 275 |
| 368. | 2.12 | Absarokee High School District / 2,302 |
| 368. | 2.12 | S H Elementary School District / 157 |
| 368. | 2.12 | Pleasant Valley Elementary School District / 164 |
| 368. | 2.12 | Sheridan Elementary School District / 1,381 |
| 373. | 2.11 | Anaconda High School District / 9,099 |
| 373. | 2.11 | Lennep Elementary School District / 59 |
| 373. | 2.11 | Van Norman Elementary School District / 74 |
| 373. | 2.11 | Anaconda Elementary School District / 9,023 |
| 373. | 2.11 | Peerless K-12 Schools / 148 |
| 378. | 2.10 | Twin Buttes Elementary School District / 82 |
| 378. | 2.10 | Terry K-12 Schools / 1,179 |
| 380. | 2.09 | Ryegate K-12 Schools / 505 |
| 380. | 2.09 | Bynum Elementary School District / 224 |
| 382. | 2.08 | Bloomfield Elementary School District / 104 |
| 382. | 2.08 | Arrowhead Elementary School District / 1,909 |
| 382. | 2.08 | Dupuyer Elementary School District / 374 |
| 382. | 2.08 | Cottonwood Elementary School District / 108 |
| 386. | 2.07 | Sheridan High School District / 1,673 |
| 387. | 2.06 | Philipsburg K-12 Schools / 1,843 |
| 387. | 2.06 | Pine Creek Elementary School District / 357 |
| 387. | 2.06 | Spring Creek Elementary School District / 64 |
| 387. | 2.06 | Hot Springs High School District / 1,439 |
| 387. | 2.06 | West Yellowstone K-12 School District / 1,769 |
| 392. | 2.04 | Plentywood K-12 Schools / 2,434 |
| 392. | 2.04 | Alzada Elementary School District / 159 |
| 392. | 2.04 | Ennis K-12 Schools / 3,482 |
| 392. | 2.04 | Swan Valley Elementary School District / 551 |
| 396. | 2.03 | Fishtail Elementary School District / 358 |
| 396. | 2.03 | Garrison Elementary School District / 128 |
| 396. | 2.03 | Swan Lake-Salmon Elementary School District / 353 |
| 399. | 2.02 | Augusta Elementary School District / 662 |
| 399. | 2.02 | Melrose Elementary School District / 115 |
| 399. | 2.02 | Lincoln K-12 Schools / 1,274 |
| 399. | 2.02 | Red Lodge High School District / 3,828 |
| 399. | 2.02 | Wise River Elementary School District / 291 |
| 399. | 2.02 | Augusta High School District / 814 |
| 405. | 2.01 | Hot Springs Elementary School District / 1,267 |
| 405. | 2.01 | Opheim K-12 Schools / 338 |
| 405. | 2.01 | Bear Paw Elementary School District / 137 |
| 408. | 2.00 | Spring Creek Colony Elementary School District / 53 |
| 408. | 2.00 | Landusky Elementary School District / 44 |
| 408. | 2.00 | West Glacier Elementary School District / 486 |
| 408. | 2.00 | Birney Elementary School District / 102 |
| 408. | 2.00 | Wisdom Elementary School District / 248 |
| 413. | 1.98 | Red Lodge Elementary School District / 3,300 |
| 414. | 1.96 | Paradise Elementary School District / 343 |
| 415. | 1.95 | Gardiner Elementary School District / 1,360 |
| 415. | 1.95 | Wolf Creek Elementary School District / 612 |
| 417. | 1.94 | Knees Elementary School District / 168 |
| 418. | 1.93 | Ovando Elementary School District / 253 |
| 418. | 1.93 | Gardiner High School District / 1,457 |
| 420. | 1.90 | Alder Elementary School District / 292 |
| 421. | 1.88 | Yaak Elementary School District / 248 |
| 422. | 1.86 | Sylvanite Elementary School District / 134 |
| 423. | 1.80 | Nye Elementary School District / 212 |
| 424. | 1.67 | Auchard Creek Elementary School District / 152 |
| 424. | 1.67 | Cooke City Elementary School District / 97 |
| 424. | 1.67 | Polaris Elementary School District / 97 |
Please note that we only rank locations with 'Average Household Size' data. The rank above might not be a complete list. Locations without 'Average Household Size' data are not listed.
