Washington Gazetteer
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
| County | Wealth Index | |
|---|---|---|
| 1. | King County | 159 |
| 2. | San Juan County | 145 |
| 3. | Snohomish County | 140 |
| 4. | Kitsap County | 138 |
| 5. | Island County | 130 |
| 6. | Columbia County | 122 |
| 7. | Benton County | 120 |
| 8. | Chelan County | 117 |
| 9. | Pierce County | 116 |
| 10. | Clark County | 114 |
| 11. | Jefferson County | 108 |
| 12. | Skagit County | 108 |
| 13. | Whatcom County | 106 |
| 14. | Thurston County | 105 |
| 15. | Mason County | 103 |
| 16. | Skamania County | 101 |
| 17. | Franklin County | 100 |
| 18. | Clallam County | 96 |
| 19. | Cowlitz County | 96 |
| 20. | Kittitas County | 94 |
