Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States, with 9,861,224 residents estimated in 2022. Its population is greater than that of 40 individual U.S. states. Comprising 88 incorporated cities and many unincorporated areas within a total area of 4,083 square miles (10,570 km2), it is home to more than a quarter of Californians and is one of the most ethnically diverse U.S. counties. The county's seat, Los Angeles, is the second most populous city in the United States, with 3,822,238 residents estimated in 2022. The county has served as the primary headquarters of the U.S. motion-picture industry since its inception in the early 20th century, which has uniquely given the county global prominence.
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 Los Angeles County in the center, and Orange County to the southeast. The Los Angeles–Anaheim–Riverside combined statistical area (CSA) covers 33,954 square miles (87,940 km2), making it the largest metropolitan region in the United States by land area. The contiguous urban area is 2,281 square miles (5,910 km2), whereas the remainder mostly consists of mountain and desert areas. With a population of 18.4 million in 2024, it is the second-largest metropolitan area in the country, behind New York, as well as one of the largest megacities in the world.
Van Nuys is a neighborhood in the central San Fernando Valley region of Los Angeles, California. Home to Van Nuys Airport and the Valley Municipal Building, it is the most populous neighborhood in the San Fernando Valley.
Charter Oak is a census-designated place (CDP) in Los Angeles County, California, approximately 26 miles (42 km) east of downtown Los Angeles. The population was 9,310 at the 2010 census, up from 9,027 at the 2000 census.
Covina (/koviːnə/) is a city in the San Gabriel Valley region of Los Angeles County, California, United States, about 22 miles (35 km) east of Downtown Los Angeles The population was 51,268 according to the 2020 census, up from 47,796 at the 2010 census. The city's slogan, "One Mile Square and All There", was coined when the incorporated area of the city was only one square mile (2.6 km2).
Glendora is a city in the San Gabriel Valley in Los Angeles County, California, 26 miles (42 km) east of Los Angeles. As of the 2020 census, the population of Glendora was 52,558.
San Dimas is a city in the San Gabriel Valley of Los Angeles County, California, United States. At the 2020 census, its population was 34,924. It historically took its name from San Dimas Canyon in the San Gabriel Mountains above the northern section of present-day San Dimas.
West Covina is a city in Los Angeles County, California, United States. Located 19 miles (31 km) east of downtown Los Angeles in the eastern San Gabriel Valley, it is part of Greater Los Angeles. The population for the city was 109,501 at the 2020 census.
Chatsworth is a suburban neighborhood in Los Angeles, California, in the San Fernando Valley.
The San Gabriel Valley, often referred to by its initials as SGV, is one of the principal valleys of Southern California, with the city of Los Angeles directly bordering it to the west, and occupying the vast majority of the southeastern part of Los Angeles County. Surrounding landforms and other features include the following:
West Hills is a neighborhood in the western San Fernando Valley region of the city of Los Angeles, California. It is bordered by mountain ranges to the west and the Los Angeles neighborhoods of Chatsworth to the north, Canoga Park to the east, and Woodland Hills to the south.
Granada Hills is a neighborhood in the San Fernando Valley region of Los Angeles. The community has a sports program and a range of city recreation centers. The neighborhood has fourteen public and ten private schools.
Lake Balboa is a neighborhood in the San Fernando Valley region of Los Angeles, California. The area was previously part of Van Nuys.
Puddingstone Reservoir is a 250-acre (1 km²) artificial lake northeast of the interchange between the Orange Freeway and the San Bernardino Freeway in Los Angeles County, California, United States. Activities include fishing, swimming, sailing, windsurfing, and camping. It is fed by Live Oak Wash and drains into Walnut Creek.
The Southern California Association of Governments (SCAG) is the Metropolitan Planning Organization (MPO) of six of the ten counties in Southern California, serving Imperial County, Los Angeles County, Orange County, Riverside County, San Bernardino County, and Ventura County. San Diego County's MPO is the San Diego Association of Governments, which is an unrelated agency.
The San Jose Hills are a part of the Transverse Ranges in eastern Los Angeles County, California, marking the border between the San Gabriel Valley and the Pomona Valley. It includes portions of Covina, West Covina, Walnut, Pomona, and San Dimas. To the south, the valley of San Jose Creek separates the San Jose Hills from the Puente Hills and Chino Hills.
Walnut Creek is an urban stream in the San Gabriel Valley of Southern California, and is a tributary of the San Gabriel River. The creek begins at the Puddingstone Dam of Puddingstone Reservoir in Frank G. Bonelli Regional Park and flows westward for about 13 miles (21 km), through San Dimas, Covina, West Covina and Baldwin Park, to join the San Gabriel River in El Monte.
Walnut Islands or Ramona is an unincorporated area in the eastern part of Los Angeles County in the U.S. state of California. The former is the technical term used by the county government, while the latter was used by the Los Angeles Times in 2008 and the LA Metrolink. One news report referred to the area as Covina Hills. Walnut Islands is surrounded by the cities of Covina and San Dimas to the north, Walnut to the south, West Covina to the west, and Pomona to the east. The population of Ramona was 4,053 according to the 2000 census.
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