| Rank | No Fuel Used Heating House Percentage ▼ | School District / Population |
| 1. | 5.1% | Avon Elementary School District / 237 |
| 2. | 4.4% | Lambert High School District / 283 |
| 3. | 4.3% | Dupuyer Elementary School District / 188 |
| 4. | 4.1% | Cardwell Elementary School District / 435 |
| 5. | 3.7% | Greycliff Elementary School District / 234 |
| 6. | 3.4% | Lambert Elementary School District / 393 |
| 7. | 3.2% | Circle Elementary School District / 1,167 |
| 8. | 2.8% | Circle High School District / 1,758 |
| 9. | 2.6% | Ashland Elementary School District / 1,205 |
| 10. | 2.5% | Lavina K-12 Schools / 385 |
| 11. | 2.5% | Rau Elementary School District / 391 |
| 12. | 2.4% | Lustre Elementary School District / 221 |
| 13. | 2.3% | Lindsay Elementary School District / 291 |
| 14. | 2.3% | Whitewater K-12 Schools / 174 |
| 15. | 2.2% | Cottonwood Elementary School District / 193 |
| 16. | 2.0% | Target Range Elementary School District / 3,691 |
| 17. | 1.9% | Wolf Creek Elementary School District / 581 |
| 18. | 1.8% | Frontier Elementary School District / 594 |
| 18. | 1.8% | Stevensville Elementary School District / 7,152 |
| 20. | 1.7% | Sand Springs Elementary School District / 148 |
| 20. | 1.7% | Jackson Elementary School District / 129 |
| 20. | 1.7% | Vida Elementary School District / 591 |
| 23. | 1.6% | Harlowton Elementary School District / 1,816 |
| 24. | 1.5% | Stevensville High School District / 10,247 |
| 25. | 1.5% | Jordan Elementary School District / 602 |
| 26. | 1.5% | Harlowton High School District / 1,882 |
| 27. | 1.4% | Medicine Lake K-12 Schools / 747 |
| 28. | 1.4% | Big Timber Elementary School District / 2,771 |
| 29. | 1.4% | Sweet Grass County High School District / 3,511 |
| 30. | 1.3% | Independent Elementary School District / 2,659 |
| 31. | 1.3% | Augusta Elementary School District / 685 |
| 32. | 1.3% | Augusta High School District / 689 |
| 32. | 1.3% | Cayuse Prairie Elementary School District / 2,379 |
| 34. | 1.2% | Whitehall High School District / 3,793 |
| 35. | 1.1% | Garfield County High School District / 1,097 |
| 36. | 1.1% | Trout Creek Elementary School District / 901 |
| 37. | 1.1% | Lame Deer High School District / 5,329 |
| 38. | 1.0% | Dawson High School District / 8,728 |
| 39. | 1.0% | Glendive Elementary School District / 6,617 |
| 40. | 1.0% | Highwood High School District / 513 |
| 41. | 1.0% | Somers Elementary School District / 6,322 |
| 42. | 1.0% | Malta K-12 Schools / 3,160 |
| 43. | 1.0% | Helena Flats Elementary School District / 1,780 |
| 44. | 0.9% | Whitehall Elementary School District / 3,215 |
| 45. | 0.9% | Roberts K-12 Schools / 747 |
| 45. | 0.9% | Huntley Project K-12 Schools / 3,538 |
| 47. | 0.9% | Frazer High School District / 719 |
| 48. | 0.8% | Deer Creek Elementary School District / 1,810 |
| 48. | 0.8% | North Star Elementary School District / 811 |
| 50. | 0.8% | Lone Rock Elementary School District / 3,095 |
| 51. | 0.8% | Vaughn Elementary School District / 1,034 |
| 52. | 0.8% | Frenchtown K-12 Schools / 6,408 |
| 53. | 0.8% | De Smet Elementary School District / 796 |
| 53. | 0.8% | Hellgate Elementary School District / 13,024 |
| 53. | 0.8% | North Star High School District / 941 |
| 56. | 0.7% | Amsterdam Elementary School District / 2,008 |
| 56. | 0.7% | Lame Deer Elementary School District / 2,765 |
| 58. | 0.7% | Livingston Elementary School District / 10,129 |
| 59. | 0.7% | Park High School District / 12,483 |
| 59. | 0.7% | East Helena Elementary School District / 9,282 |
| 61. | 0.6% | Sheridan Elementary School District / 1,378 |
| 61. | 0.6% | St. Ignatius K-12 Schools / 3,369 |
| 63. | 0.6% | La Motte Elementary School District / 778 |
| 64. | 0.6% | Trinity Elementary School District / 1,733 |
| 64. | 0.6% | Valier High School District / 1,210 |
| 66. | 0.6% | Fort Benton Elementary School District / 1,728 |
| 67. | 0.6% | Victor K-12 Schools / 3,538 |
| 68. | 0.6% | Arrowhead Elementary School District / 1,718 |
| 68. | 0.6% | Smith Valley Elementary School District / 1,883 |
| 70. | 0.6% | Townsend K-12 Schools / 5,219 |
| 71. | 0.6% | Sidney High School District / 8,438 |
| 72. | 0.5% | Miles City Elementary School District / 10,064 |
| 72. | 0.5% | Seeley Lake Elementary School District / 1,571 |
| 72. | 0.5% | Sheridan High School District / 1,650 |
| 75. | 0.5% | Denton Elementary School District / 469 |
| 75. | 0.5% | Fort Benton High School District / 2,166 |
| 77. | 0.5% | Bridger K-12 Schools / 1,739 |
| 77. | 0.5% | Helena High School District / 62,953 |
| 77. | 0.5% | Denton High School District / 479 |
| 80. | 0.5% | Sidney Elementary School District / 7,775 |
| 81. | 0.5% | Noxon High School District / 2,403 |
| 81. | 0.5% | Clancy Elementary School District / 2,935 |
| 83. | 0.5% | Custer County High School District / 11,869 |
| 84. | 0.4% | Potomac Elementary School District / 1,062 |
| 84. | 0.4% | Helena Elementary School District / 51,357 |
| 86. | 0.4% | Bozeman Elementary School District / 53,316 |
| 87. | 0.4% | Hardin High School District / 8,868 |
| 87. | 0.4% | Bozeman High School District / 59,840 |
| 87. | 0.4% | Butte Elementary School District / 33,054 |
| 90. | 0.4% | Butte High School District / 34,435 |
| 91. | 0.4% | Alberton K-12 Schools / 1,286 |
| 91. | 0.4% | Fair-Mont-Egan Elementary School District / 1,341 |
| 91. | 0.4% | Fairview Elementary School District / 1,303 |
| 94. | 0.4% | Conrad Elementary School District / 3,568 |
| 94. | 0.4% | Hardin Elementary School District / 10,144 |
| 96. | 0.4% | Fairview High School District / 1,345 |
| 96. | 0.4% | Conrad High School District / 3,800 |
| 98. | 0.3% | Scobey K-12 Schools / 1,813 |
| 98. | 0.3% | Canyon Creek Elementary School District / 2,315 |
| 98. | 0.3% | Missoula High School District / 102,467 |
| 101. | 0.3% | Bigfork Elementary School District / 5,893 |
| 101. | 0.3% | Ennis K-12 Schools / 3,483 |
| 103. | 0.3% | Name N/A / 891,341 |
| 104. | 0.3% | Great Falls High School District / 72,595 |
| 104. | 0.3% | Great Falls Elementary School District / 72,487 |
| 106. | 0.3% | Hysham K-12 Schools / 761 |
| 106. | 0.3% | Dillon Elementary School District / 7,763 |
| 106. | 0.3% | Manhattan High School District / 4,431 |
| 109. | 0.3% | Beaverhead County High School District / 8,772 |
| 110. | 0.3% | Flathead High School District / 58,126 |
| 110. | 0.3% | Laurel High School District / 10,113 |
| 112. | 0.3% | Laurel Elementary School District / 10,438 |
| 112. | 0.3% | Bigfork High School District / 7,593 |
| 114. | 0.3% | Billings Elementary School District / 111,515 |
| 114. | 0.3% | Simms High School District / 3,330 |
| 116. | 0.2% | Chester-Joplin-Inverness Elementary School District / 2,185 |
| 116. | 0.2% | Billings High School District / 133,015 |
| 116. | 0.2% | Anaconda Elementary School District / 8,970 |
| 119. | 0.2% | Anaconda High School District / 9,046 |
| 119. | 0.2% | Missoula Elementary School District / 70,909 |
| 121. | 0.2% | Wolf Point High School District / 4,735 |
| 121. | 0.2% | Chester-Joplin-Inverness High School District / 2,391 |
| 123. | 0.2% | Sunburst K-12 Schools / 1,115 |
| 124. | 0.2% | Powell County High School District / 7,207 |
| 124. | 0.2% | Hamilton K-12 Schools / 11,592 |
| 126. | 0.2% | Jefferson High School District / 8,158 |
| 127. | 0.1% | Whitefish Elementary School District / 13,008 |
| 128. | 0.1% | Whitefish High School District / 13,669 |
| 129. | 0.1% | Kalispell Elementary School District / 28,320 |
| 130. | 0.1% | Belgrade High School District / 20,718 |
| 130. | 0.1% | Belgrade Elementary School District / 20,497 |
Please note that we only rank locations with 'No Fuel Used Heating House Percentage' data. The rank above might not be a complete list. Locations without 'No Fuel Used Heating House Percentage' data are not listed.
