| Rank | Solar Energy Heating House Percentage ▼ | School District / Population |
| 1. | 1.4% | Quilcene School District / 1,807 |
| 2. | 1.3% | Lopez School District / 2,305 |
| 3. | 1.3% | Pateros School District / 1,385 |
| 4. | 0.9% | Wishkah Valley School District / 883 |
| 5. | 0.7% | Palouse School District / 1,313 |
| 6. | 0.6% | Freeman School District / 3,904 |
| 7. | 0.6% | Okanogan School District / 5,897 |
| 8. | 0.6% | Montesano School District / 8,114 |
| 9. | 0.6% | Curlew School District / 1,601 |
| 10. | 0.5% | Lyle School District / 2,650 |
| 11. | 0.5% | Chimacum School District / 11,480 |
| 12. | 0.3% | Othello School District / 13,783 |
| 13. | 0.3% | Cape Flattery School District / 3,566 |
| 14. | 0.3% | Kettle Falls School District / 5,307 |
| 15. | 0.3% | Dayton School District / 3,734 |
| 15. | 0.3% | Bainbridge Island School District / 22,486 |
| 17. | 0.3% | Port Townsend School District / 13,327 |
| 18. | 0.3% | Chewelah School District / 5,553 |
| 19. | 0.3% | Ferndale School District / 29,638 |
| 20. | 0.3% | Pioneer School District / 9,980 |
| 21. | 0.3% | Chehalis School District / 15,496 |
| 22. | 0.2% | Prosser School District / 12,466 |
| 23. | 0.2% | Blaine School District / 16,421 |
| 24. | 0.2% | Peninsula School District / 55,601 |
| 25. | 0.2% | La Conner School District / 4,679 |
| 26. | 0.1% | San Juan Island School District / 8,239 |
| 26. | 0.1% | Eastmont School District / 28,616 |
| 26. | 0.1% | Ocean Beach School District / 9,596 |
| 29. | 0.1% | Pullman School District / 30,758 |
| 29. | 0.1% | Longview Public Schools / 45,487 |
| 31. | 0.1% | Arlington School District / 29,028 |
| 32. | 0.1% | Evergreen School District (Clark) / 139,306 |
| 32. | 0.1% | Federal Way School District / 129,316 |
| 34. | 0.1% | Anacortes School District / 20,212 |
| 34. | 0.1% | Spokane Public Schools / 218,365 |
| 34. | 0.1% | Tumwater School District / 35,283 |
| 37. | 0.0% | Vancouver Public Schools / 140,573 |
| 37. | 0.0% | South Kitsap School District / 67,702 |
| 37. | 0.0% | Bremerton School District / 45,719 |
| 37. | 0.0% | Seattle School District / 596,008 |
| 41. | 0.0% | Highline School District / 121,267 |
| 41. | 0.0% | Tacoma Public Schools / 209,049 |
| 43. | 0.0% | Northshore School District / 118,540 |
| 43. | 0.0% | Edmonds School District / 153,237 |
Please note that we only rank locations with 'Solar Energy Heating House Percentage' data. The rank above might not be a complete list. Locations without 'Solar Energy 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.
