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Of the 58 counties in California, 14 are governed under a charter. They are Alameda, Butte, El Dorado, Fresno, Los Angeles, Orange, Placer, Sacramento, San Bernardino, San Diego, San Francisco, San Mateo, Santa Clara, and Tehama. [ 6 ] Nine counties in California are named for saints, tied with Louisiana for the largest number.
Old counties. Klamath County was formed in 1851 from the northern half of Trinity County. Part of the county's territory went to Del Norte County in 1857, and in 1874 the rest was split between Humboldt and Siskiyou counties. Pautah County was formed in 1852 out of land which, the state of California thought, was to be given to it by the United ...
CountyFips Code [1]County Seat [2]Established [2]1853186418541850There are 58 counties in California. Not surprisingly, California's Los Angeles County is the largest county in the state, as well as the nation, with a huge population of 10,150,558 that continues to grow – the most recent census shows that its population has increased by 3.32% since the last census.
May 16, 2024 · List of counties in California; County Seat Population (2023) Area; Alameda County: Oakland: 1,622,188: 738 sq mi (1,911 sq km) Alpine County: Markleeville
CountySeatPopulation (2023) [1]Area [2]Alameda County1,622,188738 sq mi (1,911 sq km)Alpine CountyMarkleeville1,141739 sq mi (1,914 sq km)Amador CountyJackson41,811606 sq mi (1,570 sq km)Butte CountyOroville207,1721,640 sq mi (4,248 sq km)- Interactive Map of California Counties
- Largest Counties in California by Population
- Smallest Counties in California by Population
- Notable California Counties
Below is a map of the 58 counties of California(you can click on the map to enlarge it and to see the major city in each state).
Los Angeles County
Los Angeles County is the most populous county in both California and the United States, with a population that surpasses 10 million. It’s home to the city of Los Angeles, the county seat, which holds the distinction of being the second-largest city in the nation. The city of Los Angeles is globally recognized for its entertainment industry, especially Hollywood, which has earned it the moniker of the “Entertainment Capital of the World.” The county is also renowned for its rich mix of cultur...
San Diego County
The second-most populous county in California is San Diego County, which lies at the southernmost edge of the state. There are over 3 million people that live here, and there are 18 Native American tribal reservations, the most of any county in the United States. The county seat is the city of San Diego, the second-most populous city in the state and famous for its pleasant year-round climate, extensive beaches, and natural deep-water harbor in which the Port of San Diego was established in 1...
Orange County
Like San Diego County, California’s Orange County lies in the southern part of the state and also boasts a population of over 3 million. This county is perhaps best known for its affluent communities such as Newport Beach and Huntington Beach, as well as the city of Anaheim, where Disneyland Resort is located. Orange County’s economy is driven by industries such as technology, healthcare, and professional services. The county is also home to important educational institutions, including the U...
Alpine County
With a population of only 1,344, Alpine County is the least populous county in California. It also has the lowest population density at just 0.7 people per square kilometer (0.27/mi2). Though it has a small population, the county’s location in the Sierra Nevada mountains gives it a big reputation for outdoor recreation. Alpine’s county seat and largest community is Markleeville, a census-designated place that hosts the Alpine County Courthouse at Marklee’s Cabine Site, a historical landmark....
Sierra County
Sierra County is tucked within the Sierra Nevada mountain range and is one of California’s least populous counties. The small population and surrounding natural beauty help to foster a close-knit community atmosphere in the county seat of Downieville and throughout the county. The area of modern-day Sierra County has been inhabited for more than 5,000 years. Some of the Native Americans to live here before the arrival of American immigrants in 1844 were the Miwok tribe and the Washoe tribe. T...
Modoc County
Located in the northeastern corner of California, Modoc County is a sparsely populated area known for its high desert landscapes and pine forests. The county seat is Alturas, which acts as a central hub for local ranching communities by providing necessary amenities. Alturas carries the motto, “Where the West Still Lives.” Outside of Alturas, the rural expanse of Modoc County offers remarkable natural scenery. Most notably the Modoc National Forestand a part of the Warner Mountains, providing...
San Francisco County
San Francisco County is the only consolidated city-county in California, meaning it’s governed as both a city and county. It’s also the smallest county in the state by area and has the highest population density. Known for its iconic landmarks and vibrant cultural scene, San Francisco County has a distinct identity. The Golden Gate Bridge and Park, Alcatraz Island, and Fisherman’s Wharf are just a few highlights that attract millions of tourists annually. It was also the birthplace of the 196...
Sacramento County
The city of Sacramento, which is the county seat of the eponymous county, is also the capital of the state of California, making Sacramento County the political hub of the state. It is one of the original 27 counties formed in 1850 and is known as the “City of Trees”for its many green spaces. The city of Sacramento is full of history, it’s home to the historic Sutter’s Fort, the homeland of the Nisenan people, and the first European colonial settlement in California’s Central Valley. The city...
Santa Clara County
Known as “Silicon Valley,” Santa Clara County is globally recognized as a hub for technology and innovation. The county’s cities of San Jose, Mountain View, and Palo Alto are home to many major tech companies like Apple, Google, and Facebook. In 2015, the area had the third-highest GDP per capita in the world. San Jose is the county seat and largest city in Santa Clara County. It is the largest city in Northern California by population and area, and it’s the third-most populous in the state a...
Oct 8, 2021 · California was admitted to the Union on September 9, 1850, as the 31 st state. Census data for California are available beginning with the 1850 census; however, the data for 1850 are incomplete because the questionnaires from Contra Costa and Santa Clara Counties were lost and those for San Francisco County were destroyed by fire.
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Aug 15, 2012 · California’s counties serve a dual role. They provide a vast array of municipal services to residents, including roads, parks, law enforcement, emergency response services and libraries. Counties also serve as a delivery channel for many State services, such as foster care, public health care, jails and elections. Learn More.
