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

Counties Zip Codes

Metric

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.

# 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
11 Santa Cruz County $111,093
12 Ventura County $109,797
13 El Dorado County $108,845
14 San Diego County $106,268
15 Alpine County $105,521
16 Sonoma County $104,674
17 Solano County $100,401
18 Mono County $99,415
19 Santa Barbara County $98,161
20 San Luis Obispo County $97,446
21 Monterey County $97,230
22 Riverside County $93,074
23 San Joaquin County $92,179
24 Sacramento County $92,175
25 Yolo County $91,752
26 Los Angeles County $90,112
27 Nevada County $89,882
28 Amador County $88,044
29 San Bernardino County $85,478
30 Stanislaus County $81,468
31 Sutter County $79,704
32 Calaveras County $78,647
33 Tuolumne County $77,404
34 Madera County $76,627
35 Yuba County $76,373
36 Colusa County $75,672
37 Fresno County $74,201
38 Inyo County $73,991
39 Shasta County $72,636
40 Tulare County $71,300
41 Kings County $70,995
42 Kern County $70,210
43 Mariposa County $68,412
44 Mendocino County $68,092
45 Butte County $67,928
46 Lassen County $67,403
47 Glenn County $67,139
48 Del Norte County $67,058
49 Plumas County $66,031
50 Merced County $65,510
51 Tehama County $63,784
52 Sierra County $63,355
53 Humboldt County $61,160
54 Lake County $60,621
55 Modoc County $59,455
56 Siskiyou County $59,095
57 Imperial County $57,681
58 Trinity County $53,002

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.