California County Map

About California County Map

Explore map of California with counties, The U.S. state of California is divided into 58 counties. The state was first divided into 27 counties on February 18, 1850.

Counties of California

The state of California in the USA is segregated into fifty-eight counties. At first, the california state was splitted into twenty-seven counties on 18th February 1850. These were again segregated to form 16 extra countries by the end of 1860. More 14 counties came into existence by further division from 1861-1893. The largest county by area in the USA, Bernardino County, lies in California. The Los Angeles County of California state is the largest county in terms of Population. The most recently formed or the newest county is Imperial County, which was formed in 1907.

By default, the counties of California are abided by general law. However, they may be abided by charter law as mentioned in Article XI of Section 3 of the Constitution of California. A chartered county is provided with more authority to home rules when compared to a county with general law. Out of the fifty-eight counties in California, fourteen are administered under the charter.

9 counties in California derive their names from the saints. But one shouldn’t count Santa Cruz County, Los Angeles County, and Merced County.

List of Counties in California

S.N.FIPS CodeCountyEst.County SeatPopulation (July 2019)Area (sq mi)Area (km2)
11Alameda County1853Oakland1,671,3297381,911
23Alpine County1864Markleeville1,1297391,914
35Amador County1854Jackson39,7526061,570
47Butte County1850Oroville219,1861,6404,248
59Calaveras County1850San Andreas45,9051,0202,642
611Colusa County1850Colusa21,5471,1512,981
713Contra Costa County1850Martinez1,153,5267201,865
815Del Norte County1857Crescent City27,8121,0082,611
917El Dorado County1850Placerville192,8431,7124,434
1019Fresno County1856Fresno999,1015,96315,444
1121Glenn County1891Willows28,3931,3153,406
1223Humboldt County1853Eureka135,5583,5739,254
1325Imperial County1907El Centro181,2154,17510,813
1427Inyo County1866Independence18,03910,19226,397
1529Kern County1866Bakersfield900,2028,14221,088
1631Kings County1893Hanford152,9401,3903,600
1733Lake County1861Lakeport64,3861,2583,258
1835Lassen County1864Susanville30,5734,55811,805
1937Los Angeles County1850Los Angeles10,039,1074,06010,515
2039Madera County1893Madera157,3272,1385,537
2141Marin County1850San Rafael258,8265201,347
2243Mariposa County1850Mariposa17,2031,4513,758
2345Mendocino County1850Ukiah86,7493,5099,088
2447Merced County1855Merced277,6801,9294,996
2549Modoc County1874Alturas8,8413,94410,215
2651Mono County1861Bridgeport14,4443,0447,884
2753Monterey County1850Salinas434,0613,3228,604
2855Napa County1850Napa137,7447541,953
2957Nevada County1851Nevada City99,7559582,481
3059Orange County1889Santa Ana3,175,6929482,455
3161Placer County1851Auburn398,3291,4073,644
3263Plumas County1854Quincy18,8072,5546,615
3365Riverside County1893Riverside2,470,5467,20818,669
3467Sacramento County1850Sacramento1,552,0589662,502
3569San Benito County1874Hollister62,8081,3893,597
3671San Bernardino County1853San Bernardino2,180,08520,06251,960
3773San Diego County1850San Diego3,338,3304,20410,888
3875San Francisco1850San Francisco881,54947122
3977San Joaquin County1850Stockton762,1481,3993,623
4079San Luis Obispo County1850San Luis Obispo283,1113,3048,557
4181San Mateo County1856Redwood City766,5734491,163
4283Santa Barbara County1850Santa Barbara446,4992,7387,091
4385Santa Clara County1850San Jose1,927,8521,2913,344
4487Santa Cruz County1850Santa Cruz273,2134461,155
4589Shasta County1850Redding180,0803,7869,806
4691Sierra County1852Downieville3,0059532,468
4793Siskiyou County1852Yreka43,5396,28716,283
4895Solano County1850Fairfield447,6438282,145
4997Sonoma County1850Santa Rosa494,3361,5764,082
5099Stanislaus County1854Modesto550,6601,4953,872
51101Sutter County1850Yuba City96,9716031,562
52103Tehama County1856Red Bluff65,0842,9517,643
53105Trinity County1850Weaverville12,2853,1798,234
54107Tulare County1852Visalia466,1954,82412,494
55109Tuolumne County1850Sonora54,4782,2365,791
56111Ventura County1872Ventura846,0061,8464,781
57113Yolo County1850Woodland220,5001,0122,621
58115Yuba County1850Marysville78,6686301,632