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. | Centre County | 70 |
| 2. | Lehigh County | 75 |
| 3. | Delaware County | 76 |
| 4. | Montgomery County | 81 |
| 5. | Philadelphia County | 82 |
| 6. | Wayne County | 82 |
| 7. | Bucks County | 82 |
| 8. | Chester County | 83 |
| 9. | Lancaster County | 84 |
| 10. | Monroe County | 84 |
| 11. | Northampton County | 84 |
| 12. | Berks County | 85 |
| 13. | Lackawanna County | 86 |
| 14. | Butler County | 87 |
| 15. | Adams County | 91 |
| 16. | Cumberland County | 94 |
| 17. | Carbon County | 95 |
| 18. | York County | 95 |
| 19. | Lycoming County | 96 |
| 20. | Northumberland County | 97 |