| Rank | Coal or Coke Heating House Percentage ▼ | School District / Population |
| 1. | 3.5% | Marlborough School District / 6,428 |
| 2. | 2.3% | Salem School District / 4,176 |
| 3. | 2.0% | Colebrook School District / 1,594 |
| 4. | 1.4% | Canaan School District / 1,240 |
| 5. | 1.4% | Willington School District / 5,994 |
| 5. | 1.4% | Regional High School District 08 / 19,236 |
| 7. | 1.0% | North Stonington School District / 5,293 |
| 8. | 0.9% | Lebanon School District / 7,314 |
| 9. | 0.9% | Derby School District / 12,837 |
| 10. | 0.8% | Bozrah School District / 2,631 |
| 11. | 0.7% | Griswold School District / 11,952 |
| 12. | 0.7% | Shelton School District / 40,472 |
| 13. | 0.7% | Pomfret School District / 4,216 |
| 13. | 0.7% | Orange School District / 13,947 |
| 13. | 0.7% | East Haddam School District / 9,142 |
| 16. | 0.6% | Norfolk School District / 1,486 |
| 17. | 0.6% | Stratford School District / 52,092 |
| 17. | 0.6% | Manchester School District / 58,270 |
| 19. | 0.5% | Bethany School District / 5,546 |
| 20. | 0.5% | Ashford School District / 4,297 |
| 20. | 0.5% | Columbia School District / 5,472 |
| 22. | 0.5% | Litchfield School District / 8,365 |
| 23. | 0.5% | Deep River School District / 4,611 |
| 24. | 0.4% | Regional High School District 05 / 28,462 |
| 24. | 0.4% | Chester School District / 4,223 |
| 24. | 0.4% | Regional High School District 19 / 36,619 |
| 27. | 0.4% | Hebron School District / 9,627 |
| 28. | 0.4% | Wolcott School District / 16,724 |
| 29. | 0.4% | Name N/A / 218,438 |
| 30. | 0.4% | Regional School District 17 / 14,872 |
| 31. | 0.4% | Regional School District 13 / 11,797 |
| 31. | 0.4% | Tolland School District / 14,971 |
| 33. | 0.4% | Woodstock School District / 7,916 |
| 34. | 0.3% | Thomaston School District / 7,793 |
| 34. | 0.3% | Regional School District 10 / 15,035 |
| 36. | 0.3% | Vernon School District / 29,162 |
| 37. | 0.3% | Somers School District / 11,431 |
| 38. | 0.3% | Regional High School District 07 / 13,739 |
| 38. | 0.3% | Regional School District 06 / 6,635 |
| 40. | 0.3% | Redding School District / 9,267 |
| 40. | 0.3% | Torrington School District / 35,774 |
| 42. | 0.3% | Windsor School District / 29,130 |
| 42. | 0.3% | Monroe School District / 19,744 |
| 44. | 0.3% | Regional High School District 04 / 15,477 |
| 44. | 0.3% | Colchester School District / 16,143 |
| 46. | 0.2% | Old Saybrook School District / 10,222 |
| 47. | 0.2% | Weston School District / 10,319 |
| 47. | 0.2% | Hartford School District / 125,211 |
| 47. | 0.2% | South Windsor School District / 25,795 |
| 50. | 0.2% | New Canaan School District / 20,073 |
| 51. | 0.2% | Regional School District 12 / 7,549 |
| 52. | 0.2% | West Hartford School District / 63,396 |
| 53. | 0.2% | Regional High School District 09 / 16,860 |
| 54. | 0.2% | Ridgefield School District / 25,025 |
| 55. | 0.1% | Regional School District 18 / 9,954 |
| 55. | 0.1% | West Haven School District / 55,290 |
| 55. | 0.1% | Milford School District / 53,039 |
| 55. | 0.1% | East Hartford School District / 51,211 |
| 59. | 0.1% | Plymouth School District / 12,085 |
| 59. | 0.1% | Regional High School District 01 / 15,412 |
| 59. | 0.1% | North Haven School District / 23,997 |
| 59. | 0.1% | Clinton School District / 13,188 |
| 63. | 0.1% | Regional School District 15 / 27,451 |
| 64. | 0.1% | Darien School District / 21,190 |
| 64. | 0.1% | Seymour School District / 16,551 |
| 66. | 0.1% | Bloomfield School District / 20,626 |
| 67. | 0.1% | Newington School District / 30,652 |
| 68. | 0.1% | Plainville School District / 17,791 |
| 68. | 0.1% | Southington School District / 43,509 |
| 68. | 0.1% | Meriden School District / 60,616 |
| 71. | 0.1% | Glastonbury School District / 34,661 |
| 71. | 0.1% | East Lyme School District / 19,118 |
| 71. | 0.1% | New Milford School District / 27,821 |
| 74. | 0.1% | East Haven School District / 29,139 |
| 74. | 0.1% | Enfield School District / 44,713 |
| 74. | 0.1% | Hamden School District / 61,605 |
| 77. | 0.1% | Danbury School District / 82,781 |
| 78. | 0.0% | New Britain School District / 73,095 |
| 78. | 0.0% | Stonington School District / 18,539 |
| 78. | 0.0% | Trumbull School District / 36,444 |
| 81. | 0.0% | Bristol School District / 60,556 |
| 81. | 0.0% | Waterbury School District / 109,887 |
| 83. | 0.0% | Stamford School District / 125,401 |
| 83. | 0.0% | Norwalk School District / 87,214 |
Please note that we only rank locations with 'Coal or Coke Heating House Percentage' data. The rank above might not be a complete list. Locations without 'Coal or Coke Heating House Percentage' data are not listed.
