| Rank | No Fuel Used Heating House Percentage ▼ | School District / Population |
| 1. | 3.3% | Regional School Unit 01 / 16,704 |
| 2. | 1.9% | School Administrative District 13 / 1,314 |
| 3. | 1.5% | School Administrative District 29 / 8,208 |
| 4. | 1.4% | Southport / 541 |
| 5. | 1.2% | Newcastle / 1,576 |
| 6. | 1.2% | Dennysville / 399 |
| 7. | 1.1% | Brooklin / 1,022 |
| 8. | 1.1% | School Administrative District 07 / 461 |
| 9. | 1.0% | School Administrative District 33 / 1,877 |
| 10. | 0.9% | Madawaska / 4,141 |
| 11. | 0.8% | Machias / 2,416 |
| 12. | 0.8% | School Administrative District 74 / 5,346 |
| 13. | 0.8% | School Administrative District 20 / 3,513 |
| 14. | 0.7% | Southern Aroostook Community School District / 3,049 |
| 15. | 0.7% | South Bristol / 976 |
| 16. | 0.7% | School Administrative District 28 / 8,373 |
| 17. | 0.7% | Boothbay-Boothbay Harbor Community School District / 5,544 |
| 18. | 0.7% | Portland / 66,138 |
| 19. | 0.6% | Brunswick / 20,557 |
| 20. | 0.6% | Blue Hill / 2,649 |
| 20. | 0.6% | Eastport / 1,425 |
| 22. | 0.6% | Biddeford / 21,490 |
| 23. | 0.5% | Great Salt Bay Community School District / 4,467 |
| 24. | 0.4% | Regional School Unit 02 / 14,748 |
| 25. | 0.4% | Sanford / 21,035 |
| 26. | 0.4% | School Administrative District 36 / 5,322 |
| 26. | 0.4% | Regional School Unit 39 / 10,958 |
| 28. | 0.4% | School Administrative District 17 / 23,682 |
| 29. | 0.4% | Dedham / 2,139 |
| 30. | 0.4% | York / 12,720 |
| 31. | 0.3% | School Administrative District 68 / 7,014 |
| 31. | 0.3% | School Administrative District 32 / 2,139 |
| 33. | 0.3% | Auburn / 23,279 |
| 34. | 0.3% | Regional School Unit 25 / 8,461 |
| 35. | 0.3% | Westbrook / 17,314 |
| 36. | 0.2% | School Administrative District 61 / 14,134 |
| 36. | 0.2% | Regional School Unit 23 / 29,367 |
| 38. | 0.2% | South Portland / 24,804 |
| 39. | 0.2% | School Administrative District 58 / 4,823 |
| 40. | 0.2% | Regional School Unit 21 / 18,423 |
| 41. | 0.2% | Augusta / 19,150 |
| 42. | 0.2% | Waterville / 15,777 |
| 43. | 0.2% | School Administrative District 75 / 19,689 |
| 43. | 0.2% | School Administrative District 54 / 17,286 |
| 45. | 0.1% | Name N/A / 14,506 |
| 46. | 0.1% | Bangor / 32,899 |
| 46. | 0.1% | School Administrative District 72 / 8,060 |
| 48. | 0.1% | Regional School Unit 34 / 10,108 |
| 48. | 0.1% | School Administrative District 27 / 6,683 |
| 50. | 0.1% | Regional School Unit 14 / 21,108 |
| 51. | 0.1% | Regional School Unit 20 / 18,312 |
| 51. | 0.1% | Lewiston / 36,684 |
| 53. | 0.1% | School Administrative District 09 / 18,036 |
| 54. | 0.1% | Regional School Unit 12 / 14,914 |
| 55. | 0.0% | School Administrative District 01 / 12,845 |
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.
*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.
