| Rank | Solar Energy Heating House Percentage ▼ | School District / Population |
| 1. | 2.1% | Republic School District / 3,818 |
| 2. | 1.3% | Methow Valley School District / 4,751 |
| 3. | 1.3% | Pateros School District / 1,412 |
| 4. | 0.9% | Sprague School District / 671 |
| 5. | 0.9% | Quilcene School District / 1,772 |
| 6. | 0.8% | Washtucna School District / 232 |
| 7. | 0.8% | Palouse School District / 1,390 |
| 8. | 0.7% | Centerville School District / 763 |
| 9. | 0.6% | Crescent School District / 2,713 |
| 10. | 0.6% | Arlington School District / 30,237 |
| 11. | 0.6% | Medical Lake School District / 11,439 |
| 12. | 0.6% | Lopez School District / 2,399 |
| 13. | 0.5% | Lyle School District / 2,708 |
| 14. | 0.5% | Montesano School District / 8,349 |
| 15. | 0.4% | Bainbridge Island School District / 22,933 |
| 16. | 0.3% | Kettle Falls School District / 5,601 |
| 17. | 0.3% | Ferndale School District / 30,082 |
| 18. | 0.3% | Ritzville School District / 2,766 |
| 19. | 0.3% | Dayton School District / 3,837 |
| 20. | 0.2% | Pioneer School District / 9,722 |
| 21. | 0.2% | Chimacum School District / 11,434 |
| 22. | 0.2% | Tumwater School District / 36,815 |
| 23. | 0.2% | Peninsula School District / 60,673 |
| 23. | 0.2% | La Conner School District / 4,663 |
| 25. | 0.1% | North Kitsap School District / 46,260 |
| 26. | 0.1% | Orcas Island School District / 5,017 |
| 27. | 0.1% | Federal Way School District / 131,459 |
| 28. | 0.1% | Pullman School District / 31,997 |
| 29. | 0.1% | Enumclaw School District / 26,239 |
| 29. | 0.1% | Seattle School District / 613,622 |
| 31. | 0.1% | Evergreen School District (Clark) / 140,938 |
| 32. | 0.1% | San Juan Island School District / 8,050 |
| 32. | 0.1% | Bremerton School District / 45,796 |
| 34. | 0.0% | South Kitsap School District / 68,230 |
| 34. | 0.0% | Snohomish School District / 52,346 |
| 36. | 0.0% | Highline School District / 120,110 |
| 36. | 0.0% | Tacoma Public Schools / 209,499 |
| 38. | 0.0% | Northshore School District / 123,771 |
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.
