Los Angeles County, officially the County of Los Angeles and sometimes abbreviated as LA County, is the most populous county in the United States, with 9,663,345 residents estimated in 2023. Its population is greater than that of 40 individual U.S. states.

Explore the regional diversity of Los Angeles County by viewing population, size, zip codes and other data across maps of cities, unincorporated areas and communities.

There are 88 cities in Los Angeles County, California. Each city has a mayor and a city council. "Cities within the County of Los Angeles" (PDF). Chief Executive Office - Los Angeles County. Retrieved July 28, 2001. "Census 2010: Table 3A — Total Population by Race (Hispanic exclusive) and Hispanic or Latino: 2010".

Incorporated in 1850, Los Angeles County is located along the Pacific Coast in Southern California. It comprises an area of 4,083 square miles. With over 10 million inhabitants, it is the most populous county in the US. In fact, the county is larger than that of 40 individual states.

Los Angeles County, one of California’s original 27 counties, was established on Feb. 18, 1850. It is one of the nation’s largest counties with 4,084 square miles, and has the largest population of any county in the nation – nearly 10 million residents who account for approximately 27 percent of California’s population.

Almanac facts, information and trivia about Los Angeles County, its people, cities and communities.

Map of Los Angeles County. Image and map by Los Angeles Almanac. Also see: Largest & Smallest Cities in Los Angeles County by Geographic Size. Almanac facts, information and trivia about Los Angeles County, its people, cities and communities.

Los Angeles County, one of the first counties of California, was created in 1850, the year that California became a state. [9] The U.S. Census Bureau says that the county has an area of 4,751 square miles (12,310 km 2). Of that, 4,058 square miles (10,510 km 2) is land and 693 square miles (1,790 km 2) (15%) is water. [10]

Greater Los Angeles is the most populous metropolitan area in the U.S. state of California, encompassing five counties in Southern California extending from Ventura County in the west to San Bernardino County and Riverside County in the east, with the city of Los Angeles and Los Angeles County at its center, and Orange County to the southeast.

See: Map of Los Angeles County. Almanac facts, information and trivia about Los Angeles County, its people, cities and communities.