Counties in California
California has 58 counties. Find yours from your location, or explore the map and the full list with seats, population, time zones and FIPS codes.
Updated · Data: U.S. Census Bureau
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California has 58 counties, home to about 39,242,785 people. Sort the table by any column, or search by name or seat.
Counties58Pacific time
Most peopleLos Angeles County9,848,406 residents, 25% of the state
Fewest peopleAlpine County1,695 residents
Most crowdedSan Francisco County17,908 people per sq mi
Largest by landSan Bernardino County20,068.2 sq mi
Priciest homesSan Mateo Countymedian value $1,494,500
California county map
Population1.7k20k55k135k259k476k1.0Mno data
County explorer: all 58 counties in California
| County | Seat | Population | Land sq mi | People / sq mi | Median home | Time zone | FIPS |
|---|---|---|---|---|---|---|---|
| Los Angeles | Los Angeles | 9,848,406 | 4,060.3 | 2,426 | $783,300 | Pacific | 06037 |
| San Diego | San Diego | 3,282,782 | 4,210.5 | 780 | $791,600 | Pacific | 06073 |
| Orange | Santa Ana | 3,164,063 | 792.9 | 3,990 | $915,500 | Pacific | 06059 |
| Riverside | Riverside | 2,449,909 | 7,209.3 | 340 | $510,300 | Pacific | 06065 |
| San Bernardino | San Bernardino | 2,187,816 | 20,068.2 | 109 | $475,000 | Pacific | 06071 |
| Santa Clara | San Jose | 1,903,297 | 1,291.1 | 1,474 | $1,382,800 | Pacific | 06085 |
| Alameda | Oakland | 1,651,949 | 737.5 | 2,240 | $1,057,400 | Pacific | 06001 |
| Sacramento | Sacramento | 1,584,047 | 965.3 | 1,641 | $498,900 | Pacific | 06067 |
| Contra Costa | Martinez | 1,161,458 | 716.9 | 1,620 | $830,800 | Pacific | 06013 |
| Fresno | Fresno | 1,012,152 | 5,958.6 | 170 | $362,600 | Pacific | 06019 |
| Kern | Bakersfield | 910,433 | 8,134.7 | 112 | $310,600 | Pacific | 06029 |
| Ventura | Ventura | 838,259 | 1,840.8 | 455 | $768,400 | Pacific | 06111 |
| San Francisco | - | 836,321 | 46.7 | 17,908 | $1,380,500 | Pacific | 06075 |
| San Joaquin | Stockton | 787,416 | 1,392.2 | 566 | $494,500 | Pacific | 06077 |
| San Mateo | Redwood City | 745,100 | 448.6 | 1,661 | $1,494,500 | Pacific | 06081 |
| Stanislaus | Modesto | 552,250 | 1,496.2 | 369 | $426,600 | Pacific | 06099 |
| Sonoma | Santa Rosa | 485,642 | 1,575.3 | 308 | $779,000 | Pacific | 06097 |
| Tulare | Visalia | 475,774 | 4,823.9 | 99 | $303,000 | Pacific | 06107 |
| Solano | Fairfield | 450,824 | 821.7 | 549 | $589,600 | Pacific | 06095 |
| Santa Barbara | Santa Barbara | 443,975 | 2,733.9 | 162 | $735,700 | Pacific | 06083 |
| Monterey | Salinas | 435,834 | 3,281.7 | 133 | $723,100 | Pacific | 06053 |
| Placer | Auburn | 412,435 | 1,407.1 | 293 | $658,800 | Pacific | 06061 |
| Merced | Merced | 285,597 | 1,938.0 | 147 | $368,400 | Pacific | 06047 |
| San Luis Obispo | San Luis Obispo | 281,486 | 3,300.8 | 85 | $777,200 | Pacific | 06079 |
| Santa Cruz | Santa Cruz | 266,021 | 445.1 | 598 | $1,015,200 | Pacific | 06087 |
| Marin | San Rafael | 258,765 | 520.1 | 498 | $1,390,000 | Pacific | 06041 |
| Yolo | Woodland | 217,782 | 1,013.0 | 215 | $593,800 | Pacific | 06113 |
| Butte | Oroville | 209,470 | 1,636.5 | 128 | $408,700 | Pacific | 06007 |
| El Dorado | Placerville | 192,299 | 1,707.8 | 113 | $640,500 | Pacific | 06017 |
| Shasta | Redding | 181,554 | 3,775.7 | 48 | $347,200 | Pacific | 06089 |
| Imperial | El Centro | 179,319 | 4,175.5 | 43 | $279,500 | Pacific | 06025 |
| Madera | Madera | 158,790 | 2,136.7 | 74 | $367,700 | Pacific | 06039 |
| Kings | Hanford | 152,830 | 1,391.0 | 110 | $305,700 | Pacific | 06031 |
| Napa | Napa | 136,070 | 752.0 | 181 | $838,800 | Pacific | 06055 |
| Humboldt | Eureka | 135,418 | 3,568.0 | 38 | $418,800 | Pacific | 06023 |
| Nevada | Nevada City | 102,452 | 957.8 | 107 | $602,800 | Pacific | 06057 |
| Sutter | Yuba City | 98,971 | 602.7 | 164 | $399,400 | Pacific | 06101 |
| Mendocino | Ukiah | 90,709 | 3,506.8 | 26 | $486,000 | Pacific | 06045 |
| Yuba | Marysville | 83,079 | 632.0 | 131 | $380,000 | Pacific | 06115 |
| Lake | Lakeport | 68,139 | 1,255.1 | 54 | $316,800 | Pacific | 06033 |
| San Benito | Hollister | 66,056 | 1,388.7 | 48 | $751,500 | Pacific | 06069 |
| Tehama | Red Bluff | 65,520 | 2,949.1 | 22 | $315,600 | Pacific | 06103 |
| Tuolumne | Sonora | 54,873 | 2,220.9 | 25 | $406,200 | Pacific | 06109 |
| Calaveras | San Andreas | 45,995 | 1,020.0 | 45 | $441,800 | Pacific | 06009 |
| Siskiyou | Yreka | 43,834 | 6,278.8 | 7 | $284,500 | Pacific | 06093 |
| Amador | Jackson | 41,029 | 594.6 | 69 | $422,800 | Pacific | 06005 |
| Lassen | Susanville | 31,177 | 4,541.4 | 7 | $259,500 | Pacific | 06035 |
| Glenn | Willows | 28,623 | 1,314.0 | 22 | $338,400 | Pacific | 06021 |
| Del Norte | Crescent City | 27,293 | 1,006.2 | 27 | $319,600 | Pacific | 06015 |
| Colusa | Colusa | 21,895 | 1,150.7 | 19 | $375,100 | Pacific | 06011 |
| Plumas | - | 19,607 | 2,553.1 | 8 | $327,400 | Pacific | 06063 |
| Inyo | Independence | 18,803 | 10,197.3 | 2 | $338,400 | Pacific | 06027 |
| Mariposa | Mariposa | 17,060 | 1,448.8 | 12 | $358,000 | Pacific | 06043 |
| Trinity | Weaverville | 15,886 | 3,179.3 | 5 | $329,000 | Pacific | 06105 |
| Mono | Bridgeport | 13,169 | 3,048.9 | 4 | $514,300 | Pacific | 06051 |
| Modoc | Alturas | 8,646 | 3,948.2 | 2 | $212,000 | Pacific | 06049 |
| Sierra | Downieville | 2,731 | 953.2 | 3 | $334,100 | Pacific | 06091 |
| Alpine | Markleeville | 1,695 | 738.3 | 2 | $466,100 | Pacific | 06003 |
Which California cities are in more than one county?
- Aromas: San Benito County 61.6%, Monterey County 38.4% of residents
Sources: Census TIGER/Line 2024; ACS 2019-2023 5-year; Wikidata, CC0 (seats); timezone-boundary-builder (time zones). Data as of November 1, 2026. Not affiliated with any government agency.
FAQ
Frequently asked questions
How many counties are in California?
58.
What is the most populated county in California?
Los Angeles County, with about 9,848,406 people (25% of the state).
What is the least populated county in California?
Alpine County, with about 1,695 people.
What is the largest county in California by land?
San Bernardino County, 20,068.2 sq mi of land.
What county am I in, in California?
Use the tool at the top of this page: press Use my current location, or type your city or ZIP code.