California 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.
| Name | County | Wealth Index | |
|---|---|---|---|
| 1. | Town of Hillsborough | San Mateo | 499 |
| 2. | Town of Los Altos Hills | Santa Clara | 498 |
| 3. | City of Rolling Hills | Los Angeles | 498 |
| 4. | City of Hidden Hills | Los Angeles | 496 |
| 5. | Town of Atherton | San Mateo | 489 |
| 6. | Loyola Census Designated Place | Santa Clara | 481 |
| 7. | City of Piedmont | Alameda | 481 |
| 8. | City of Monte Sereno | Santa Clara | 477 |
| 9. | Town of Portola Valley | San Mateo | 470 |
| 10. | North Gate Census Designated Place | Contra Costa | 468 |
| 11. | Town of Woodside | San Mateo | 461 |
| 12. | Alamo Census Designated Place | Contra Costa | 460 |
| 13. | City of Orinda | Contra Costa | 453 |
| 14. | Emerald Lake Hills Census Designated Place | San Mateo | 443 |
| 15. | Town of Ross | Marin | 441 |
| 16. | City of Los Altos | Santa Clara | 440 |
| 17. | Bell Canyon Census Designated Place | Ventura | 439 |
| 18. | Sleepy Hollow Census Designated Place | Marin | 427 |
| 19. | Blackhawk Census Designated Place | Contra Costa | 423 |
| 20. | City of Belvedere | Marin | 421 |
