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.
| County | Housing Affordability Index | |
|---|---|---|
| 1. | Gilliam County | 128 |
| 2. | Lake County | 109 |
| 3. | Sherman County | 97 |
| 4. | Grant County | 95 |
| 5. | Morrow County | 88 |
| 6. | Union County | 74 |
| 7. | Umatilla County | 73 |
| 8. | Malheur County | 72 |
| 9. | Columbia County | 72 |
| 10. | Yamhill County | 71 |
| 11. | Jefferson County | 70 |
| 12. | Polk County | 70 |
| 13. | Wallowa County | 69 |
| 14. | Harney County | 69 |
| 15. | Washington County | 65 |
| 16. | Wheeler County | 64 |
| 17. | Marion County | 64 |
| 18. | Linn County | 64 |
| 19. | Coos County | 64 |
| 20. | Crook County | 64 |