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Counties in California Map

The California county map clearly shows the political subdivisions of the state. The state of California is divided into 58 counties for efficient administration. The counties are governed by the respective county seats.
Counties in California - County Map Oregon County Map Idaho County Map Utah County Map Arizona County Map Mexico Map Nevada County Map Del Norte Map Siskiyou County Modoc County Lassen County Shasta County Humboldt County Trinity County Tehama County Plumas County Sierra County Nevada County Butte County Yuba County Glenn County Colusa County Sutter County Sacramento County Solano County Yolo County Napa County Lake County Mendocino County Sonoma County Marin County Contra Costa County San Francisco County Alameda County San Mateo County San Joaquin County Santa Clara County Santa Cruz County Stanislaus County Merced County San Benito County Monterey County Kings County Fresno County Tulare County Madera County Mariposa County Tuolumne County Calaveras County Amador County El Dorado County Placer County Alpine County Mono County Inyo County Kern County San Luis Obispo County Santa Barbara County San Bernardino County Riverside County Imperial County San Diego County Orange County Los Angeles County Ventura County Ventura County Ventura County Ventura County
Description : Map locating all the 58 counties in California. Disclaimer
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California County Map


The California county map outlines the political subdivisions of the state.
There are 58 counties in California and each of them are distinctly marked in the map for a clear understanding of their locations within the state.

The nation’s heartthrob, California is the most populous and the third largest state by area in the United States. It is surrounded by Oregon on the North, Arizona on the southeast, Nevada on the East, and the Mexican state of Baja, California, on the South. California is divided into counties, and at present there are 58 counties. When the division of areas into counties started in 18 February 1850, there existed 27 counties. 20 counties were added within the year 1865, and by the turn of the century 10 more came into existence. Imperial County, which was the last addition to the list of counties in California, was established in 1907.

  List of California Counties  
County NameCounty SeatArea (sq. mi.)Established in YearFormed fromPopulation (Jul 1, 2013)
Alameda CountyOakland737.571853Contra Costa and Santa Clara1578891
Alpine CountyMarkleeville738.621864Amador, El Dorado, Calaveras, Mono and Tuolumne1159
Amador CountyJackson592.971854Calaveras36519
Butte CountyOroville1639.491850Original222090
Calaveras CountySan Andreas1020.041850Original44515
Colusa CountyColusa1150.681850Original21358
Contra Costa CountyMartinez719.951850Original1094205
Del Norte CountyCrescent City1007.811857Klamath27873
El Dorado CountyPlacerville1710.851850Original181737
Fresno CountyFresno5962.731856Mariposa, Merced and Tulare955272
Glenn CountyWillows1314.791891Colusa27940
Humboldt CountyEureka3572.491853Trinity134493
Imperial CountyEl Centro4174.731907San Diego176584
Inyo CountyIndependence10203.11866Mono and Tulare18467
Kern CountyBakersfield8140.961866Los Angeles and Tulare864124
Kings CountyHanford1390.991893Tulare150960
Lake CountyLakeport1257.961861Napa63860
Lassen CountySusanville4557.271864Plumas and Shasta, and now defunctLake County, Nevada32163
Los Angeles CountyLos Angeles4060.871850Original10017068
Madera CountyMadera2135.861893Mariposa152389
Marin CountySan Rafael519.81850Original258365
Mariposa CountyMariposa1451.121850Original17755
Mendocino CountyUkiah3508.971850Original87192
Merced CountyMerced1928.691855Mariposa263228
Modoc CountyAlturas3944.11874Siskiyou9147
Mono CountyBridgeport3044.41861Calaveras, Fresno and Mariposa14074
Monterey CountySalinas3321.951850Original428826
Napa CountyNapa753.731850Original140326
Nevada CountyNevada City957.611851Yuba98200
Orange CountySanta Ana789.41889Los Angeles3114363
Placer CountyAuburn1404.371851Sutter and Yuba367309
Plumas CountyQuincy2553.691854Butte18859
Riverside CountyRiverside7207.371893San Bernardino and San Diego2292507
Sacramento CountySacramento965.651850Original1462131
San Benito CountyHollister1389.061874Monterey57600
San Bernardino CountySan Bernardino20052.51853Los Angeles2088371
San Diego CountySan Diego4199.891850Original3211252
San Francisco CountySan Francisco46.691850Original837442
San Joaquin CountyStockton1399.281850Original704379
San Luis Obispo CountySan Luis Obispo3304.321850Original276443
San Mateo CountyRedwood City449.071856San Francisco and Santa Cruz747373
Santa Barbara CountySanta Barbara2737.011850Original435697
Santa Clara CountySan Jose1290.691850Original1862041
Santa Cruz CountySanta Cruz445.241850Original269419
Shasta CountyRedding3785.191850Original178980
Sierra CountyDownieville953.381852Yuba3047
Siskiyou CountyYreka6286.781852Shasta and Klamath43799
Solano CountyFairfield829.191850Original424788
Sonoma CountySanta Rosa1575.881850Original495025
Stanislaus CountyModesto1493.791854Tuolumne525491
Sutter CountyYuba City602.541850Original95350
Tehama CountyRed Bluff2950.991856Butte, Colusa and Shasta63057
Trinity CountyWeaverville3178.611850Original13448
Tulare CountyVisalia4823.971852Mariposa454143
Tuolumne CountySonora2235.411850Original53874
Ventura CountyVentura1845.31872Santa Barbara839620
Yolo CountyWoodland1013.271850Original204593
Yuba CountyMarysville630.691850Original73340

last updated on : February 1, 2016


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