The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
| Name | County | Housing Affordability Index | |
|---|---|---|---|
| 1. | Upper Elochoman Census Designated Place | Wahkiakum | 23 |
| 2. | Skamokawa Valley Census Designated Place | Wahkiakum | 27 |
| 3. | Chelan Falls Census Designated Place | Chelan | 30 |
| 4. | Clallam Bay Census Designated Place | Clallam | 31 |
| 5. | Manson Census Designated Place | Chelan | 32 |
| 6. | Marietta-Alderwood Census Designated Place | Whatcom | 33 |
| 7. | Moclips Census Designated Place | Grays Harbor | 33 |
| 8. | City of Pullman | Whitman | 34 |
| 9. | Brinnon Census Designated Place | Jefferson | 34 |
| 10. | Maple Falls Census Designated Place | Whatcom | 35 |
| 11. | City of Port Townsend | Jefferson | 36 |
| 12. | City of Bellingham | Whatcom | 37 |
| 13. | Cowiche Census Designated Place | Yakima | 37 |
| 14. | Barney's Junction Census Designated Place | Ferry | 38 |
| 15. | Four Lakes Census Designated Place | Spokane | 38 |
| 16. | Grayland Census Designated Place | Grays Harbor | 38 |
| 17. | Town of South Cle Elum | Kittitas | 39 |
| 18. | Eschbach Census Designated Place | Yakima | 40 |
| 19. | City of Cheney | Spokane | 40 |
| 20. | Canyon Creek Census Designated Place | Snohomish | 40 |