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. | Ripley Census Designated Place | Riverside | 19 |
| 2. | University of California-Davis Census Designated Place | Yolo | 19 |
| 3. | Oasis Census Designated Place | Riverside | 20 |
| 4. | Linnell Camp Census Designated Place | Tulare | 21 |
| 5. | Winterhaven Census Designated Place | Imperial | 22 |
| 6. | London Census Designated Place | Tulare | 23 |
| 7. | McClellan Park Census Designated Place | Sacramento | 23 |
| 8. | Isla Vista Census Designated Place | Santa Barbara | 24 |
| 9. | Thermal Census Designated Place | Riverside | 24 |
| 10. | City of Mendota | Fresno | 25 |
| 11. | Cantua Creek Census Designated Place | Fresno | 25 |
| 12. | Desert Shores Census Designated Place | Imperial | 26 |
| 13. | City of Huron | Fresno | 26 |
| 14. | Rouse Census Designated Place | Stanislaus | 26 |
| 15. | Ruth Census Designated Place | Trinity | 26 |
| 16. | City of San Joaquin | Fresno | 26 |
| 17. | Tipton Census Designated Place | Tulare | 26 |
| 18. | Niland Census Designated Place | Imperial | 27 |
| 19. | Mecca Census Designated Place | Riverside | 27 |
| 20. | Earlimart Census Designated Place | Tulare | 27 |
