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California county map

See all 58 counties on one clear, labelled map. Use the alphabetical table below to verify names and compare land area.

Boundary vintage: 2025Source: U.S. Census BureauUpdated September 15, 2026
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Labelled map of California counties AlamedaAlpineAmadorButteCalaverasColusaContra CostaDel NorteEl DoradoFresnoGlennHumboldtImperialInyoKernKingsLakeLassenLos AngelesMaderaMarinMariposaMendocinoMercedModocMonoMontereyNapaNevadaOrangePlacerPlumasRiversideSacramentoSan BenitoSan BernardinoSan DiegoSan FranciscoSan JoaquinSan Luis ObispoSan MateoSanta BarbaraSanta ClaraSanta CruzShastaSierraSiskiyouSolanoSonomaStanislausSutterTehamaTrinityTulareTuolumneVenturaYoloYuba
Boundary data: U.S. Census Bureau 2025 cartographic boundary files. Zoom in for county names, then drag the map or use the arrow keys to move around.
Map scope: This is a county boundary reference map. It does not show roads, parcels, ZIP codes, election precincts, or terrain.

Alphabetical list of California counties

The land-area figures are rounded to the nearest square mile. Water area is shown separately so large lakes or coastal waters do not obscure the comparison.

NameFIPS codeLand areaWater area
Alameda County06001737 sq mi84 sq mi
Alpine County06003738 sq mi5 sq mi
Amador County06005595 sq mi11 sq mi
Butte County060071,637 sq mi41 sq mi
Calaveras County060091,020 sq mi17 sq mi
Colusa County060111,151 sq mi6 sq mi
Contra Costa County06013717 sq mi87 sq mi
Del Norte County060151,006 sq mi223 sq mi
El Dorado County060171,708 sq mi79 sq mi
Fresno County060195,959 sq mi53 sq mi
Glenn County060211,314 sq mi13 sq mi
Humboldt County060233,568 sq mi484 sq mi
Imperial County060254,175 sq mi305 sq mi
Inyo County0602710,197 sq mi30 sq mi
Kern County060298,135 sq mi30 sq mi
Kings County060311,391 sq mi1 sq mi
Lake County060331,255 sq mi73 sq mi
Lassen County060354,541 sq mi179 sq mi
Los Angeles County060374,060 sq mi689 sq mi
Madera County060392,137 sq mi16 sq mi
Marin County06041520 sq mi308 sq mi
Mariposa County060431,449 sq mi14 sq mi
Mendocino County060453,507 sq mi371 sq mi
Merced County060471,938 sq mi41 sq mi
Modoc County060493,948 sq mi255 sq mi
Mono County060513,049 sq mi83 sq mi
Monterey County060533,282 sq mi490 sq mi
Napa County06055752 sq mi40 sq mi
Nevada County06057958 sq mi16 sq mi
Orange County06059793 sq mi156 sq mi
Placer County060611,407 sq mi95 sq mi
Plumas County060632,553 sq mi60 sq mi
Riverside County060657,209 sq mi94 sq mi
Sacramento County06067965 sq mi29 sq mi
San Benito County060691,389 sq mi2 sq mi
San Bernardino County0607120,068 sq mi37 sq mi
San Diego County060734,211 sq mi315 sq mi
San Francisco County0607547 sq mi185 sq mi
San Joaquin County060771,392 sq mi34 sq mi
San Luis Obispo County060793,301 sq mi315 sq mi
San Mateo County06081449 sq mi292 sq mi
Santa Barbara County060832,734 sq mi1,054 sq mi
Santa Clara County060851,291 sq mi13 sq mi
Santa Cruz County06087445 sq mi162 sq mi
Shasta County060893,776 sq mi72 sq mi
Sierra County06091953 sq mi9 sq mi
Siskiyou County060936,279 sq mi69 sq mi
Solano County06095822 sq mi84 sq mi
Sonoma County060971,575 sq mi192 sq mi
Stanislaus County060991,496 sq mi18 sq mi
Sutter County06101603 sq mi6 sq mi
Tehama County061032,949 sq mi13 sq mi
Trinity County061053,179 sq mi28 sq mi
Tulare County061074,824 sq mi14 sq mi
Tuolumne County061092,221 sq mi54 sq mi
Ventura County061111,841 sq mi366 sq mi
Yolo County061131,013 sq mi9 sq mi
Yuba County06115632 sq mi12 sq mi

Largest California counties by land area

These are the five largest mapped units in California by Census-reported land area:

  1. San Bernardino County — 20,068 square miles
  2. Inyo County — 10,197 square miles
  3. Kern County — 8,135 square miles
  4. Riverside County — 7,209 square miles
  5. Siskiyou County — 6,279 square miles

How to read and use this map

County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.

For classroom or planning use, print directly from this page. If labels become crowded, choose landscape orientation and reduce page margins. The underlying vector lines remain crisp at different sizes.

Frequently asked questions

How many counties are in California?

California has 58 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.

Can I print this California county map?

Yes. Choose Print map and use landscape orientation for the widest map. Because the map is SVG, its boundary lines stay sharp when scaled.

Are these legal survey boundaries?

No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.

Map source

U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:20,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 15, 2026.