Richest & Poorest Counties in California
California has 58 counties. The wealthiest county by median household income is Santa Clara County at $164,281 , while the lowest-income county is Trinity County at $53,002 . The statewide median household income is $99,122, compared to the national median of $75,149.
Geography
Metric
California — Median Household Income by County
Source: U.S. Census Bureau — ACS 5-Year Estimates. All values are estimates subject to margin of error.
Richest Counties in California
Top 10 counties ranked by median household income.
| # | County | Income |
|---|---|---|
| 1 | Santa Clara County | $164,281 |
| 2 | San Mateo County | $158,855 |
| 3 | Marin County | $149,091 |
| 4 | San Francisco County | $140,970 |
| 5 | Alameda County | $129,367 |
| 6 | Contra Costa County | $127,229 |
| 7 | Orange County | $116,289 |
| 8 | Placer County | $115,998 |
| 9 | San Benito County | $114,394 |
| 10 | Napa County | $111,471 |
Poorest Counties in California
Bottom 10 counties ranked by median household income.
| # | County | Income |
|---|---|---|
| 58 | Trinity County | $53,002 |
| 57 | Imperial County | $57,681 |
| 56 | Siskiyou County | $59,095 |
| 55 | Modoc County | $59,455 |
| 54 | Lake County | $60,621 |
| 53 | Humboldt County | $61,160 |
| 52 | Sierra County | $63,355 |
| 51 | Tehama County | $63,784 |
| 50 | Merced County | $65,510 |
| 49 | Plumas County | $66,031 |
All 58 Counties Ranked
Every county in California ranked by median household income. Click any county for its full profile.
About This Data
All figures are estimates from the American Community Survey 2024 5-Year Estimates, published by the U.S. Census Bureau. Values are subject to sampling variability and margin of error.
Rankings are within California only and may differ from national rankings. For more information, see our methodology.