Los Angeles County, California

Los Angeles CountyLos AngelesCounty of Los Angelesthe countyL.A. CountycountyLos Angeles CountiesLA CountyLos Angeles, CaliforniaCalifornia
Los Angeles County, officially the County of Los Angeles (Condado de Los Ángeles), is the most populous county in the Los Angeles metropolitan area of the U.S. state of California and is the most populated county in the United States, with more than 10 million inhabitants.wikipedia
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California

CAState of CaliforniaCalifornia, USA
Los Angeles County, officially the County of Los Angeles (Condado de Los Ángeles), is the most populous county in the Los Angeles metropolitan area of the U.S. state of California and is the most populated county in the United States, with more than 10 million inhabitants.
California also has the nation's most populous county, Los Angeles County, and its largest county by area, San Bernardino County.

Los Angeles metropolitan area

Los AngelesGreater Los AngelesL.A. metro area
Los Angeles County, officially the County of Los Angeles (Condado de Los Ángeles), is the most populous county in the Los Angeles metropolitan area of the U.S. state of California and is the most populated county in the United States, with more than 10 million inhabitants.
The metropolitan area is defined by the Office of Management and Budget as the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area (MSA), consisting of Los Angeles and Orange counties, a metropolitan statistical area used for statistical purposes by the United States Census Bureau and other agencies.

List of unincorporated communities in Los Angeles County, California

many unincorporated areas
It has 88 incorporated cities and many unincorporated areas and at 4083 sqmi, it is larger than the combined areas of Delaware and Rhode Island.
There are 76 unincorporated communities in Los Angeles County, California.

List of cities in Los Angeles County, California

City10th11th
It has 88 incorporated cities and many unincorporated areas and at 4083 sqmi, it is larger than the combined areas of Delaware and Rhode Island.
There are 88 cities in Los Angeles County, California. Each city has a mayor and a city council.

List of the most populous counties in the United States

most populous countysecond-most populous11th-most populous
Los Angeles County, officially the County of Los Angeles (Condado de Los Ángeles), is the most populous county in the Los Angeles metropolitan area of the U.S. state of California and is the most populated county in the United States, with more than 10 million inhabitants.

Los Angeles River

Los AngelesLA River[Los Angeles] River
The Los Angeles River, Rio Hondo, the San Gabriel River and the Santa Clara River flow in Los Angeles County, while the primary mountain ranges are the Santa Monica Mountains and the San Gabriel Mountains.
The Los Angeles River (L.A. River) starts in the Simi Hills and Santa Susana Mountains and flows through Los Angeles County, California, from Canoga Park in the western end of the San Fernando Valley, nearly 51 mi southeast to its mouth in Long Beach.

San Gabriel River (California)

San Gabriel RiverSan GabrielEast Fork
The Los Angeles River, Rio Hondo, the San Gabriel River and the Santa Clara River flow in Los Angeles County, while the primary mountain ranges are the Santa Monica Mountains and the San Gabriel Mountains.
The San Gabriel River is a mostly urban waterway flowing 58 mi southward through Los Angeles and Orange Counties, California in the United States.

Orange County, California

Orange CountyOrangeOrange County, CA
The county originally included parts of what are now Kern, San Bernardino, Riverside, Inyo, Tulare, Ventura, and Orange counties.
Anaheim was the first city, incorporated in 1870 when the region was still part of neighboring Los Angeles County.

Antelope Valley

AntelopeAntelope Valley areaAntelope Valley, California
The western extent of the Mojave Desert begins in the Antelope Valley, in the northeastern part of the county. Other population centers are found in the Santa Clarita Valley, Pomona Valley, Crescenta Valley and Antelope Valley.
Antelope Valley is located in northern Los Angeles County, California, and the southeast portion of Kern County, California, and constitutes the western tip of the Mojave Desert.

San Fernando Valley

San Fernandothe ValleySan Fernando Valley, California
Most of the population of Los Angeles County is located in the south and southwest, with major population centers in the Los Angeles Basin, San Fernando Valley and San Gabriel Valley.
The San Fernando Valley (known locally as "The Valley" ; Valle de San Fernando) is an urbanized valley in Los Angeles County, California in the Los Angeles metropolitan area, defined by the mountains of the Transverse Ranges circling it. Home to 1.77 million people, it is north of the larger, more populous Los Angeles Basin.

San Gabriel Mountains

San GabrielSan GabrielsSan Gabriel Mountain
The Los Angeles River, Rio Hondo, the San Gabriel River and the Santa Clara River flow in Los Angeles County, while the primary mountain ranges are the Santa Monica Mountains and the San Gabriel Mountains. The county is divided west-to-east by the San Gabriel Mountains, which are part of the Transverse Ranges of southern California, and are contained mostly within the Angeles National Forest.
The San Gabriel Mountains are a mountain range located in northern Los Angeles County and western San Bernardino County, California, United States.

San Gabriel Valley

San GabrielEast San Gabriel ValleyGreater San Gabriel Valley
Most of the population of Los Angeles County is located in the south and southwest, with major population centers in the Los Angeles Basin, San Fernando Valley and San Gabriel Valley.
In 1886, Pasadena was the first independent incorporated city still located in Los Angeles County (both Anaheim and Santa Ana are now located in Orange County).

Rio Hondo (California)

Rio HondoRio Hondo RiverHondo, California
The Los Angeles River, Rio Hondo, the San Gabriel River and the Santa Clara River flow in Los Angeles County, while the primary mountain ranges are the Santa Monica Mountains and the San Gabriel Mountains.
The Rio Hondo (Spanish translation: "Deep River") is a tributary of the Los Angeles River in Los Angeles County, California, approximately 16.4 mi long.

Mount San Antonio

Mount BaldyMt. BaldyMount San Antonio ("Mount Baldy")
Most of the county's highest peaks are in the San Gabriel Mountains, including Mount San Antonio 10068 ft) at the Los Angeles-San Bernardino county lines, Mount Baden-Powell 9399 ft, Mount Burnham 8997 ft and Mount Wilson 5710 ft. Several lower mountains are in the northern, western, and southwestern parts of the county, including the San Emigdio Mountains, the southernmost part of Tehachapi Mountains and the Sierra Pelona Mountains.
Mount San Antonio, colloquially referred to as Mount Baldy, is the highest peak of the San Gabriel Mountains, and the highest point in Los Angeles County, California.

San Bernardino County, California

San Bernardino CountySan BernardinoSan Bernardino Counties
The county originally included parts of what are now Kern, San Bernardino, Riverside, Inyo, Tulare, Ventura, and Orange counties. Most of the county's highest peaks are in the San Gabriel Mountains, including Mount San Antonio 10068 ft) at the Los Angeles-San Bernardino county lines, Mount Baden-Powell 9399 ft, Mount Burnham 8997 ft and Mount Wilson 5710 ft. Several lower mountains are in the northern, western, and southwestern parts of the county, including the San Emigdio Mountains, the southernmost part of Tehachapi Mountains and the Sierra Pelona Mountains.
Following the purchase of Rancho San Bernardino, and the establishment of the town of San Bernardino in 1851 by Mormon colonists, San Bernardino County was formed in 1853 from parts of Los Angeles County.

Crescenta Valley

CrescentaLa Crescenta
Other population centers are found in the Santa Clarita Valley, Pomona Valley, Crescenta Valley and Antelope Valley.
The Crescenta Valley is a small inland valley in Los Angeles County, California, lying between the San Gabriel Mountains on the northeast and the Verdugo Mountains and San Rafael Hills on the southwest.

Angeles National Forest

Angeles ForestAngeles
The county is divided west-to-east by the San Gabriel Mountains, which are part of the Transverse Ranges of southern California, and are contained mostly within the Angeles National Forest.
The Angeles National Forest (ANF) of the U.S. Forest Service is located in the San Gabriel Mountains and Sierra Pelona Mountains, primarily within Los Angeles County in southern California.

Mount Wilson (California)

Mount WilsonMt. WilsonMount Wilson in California
Most of the county's highest peaks are in the San Gabriel Mountains, including Mount San Antonio 10068 ft) at the Los Angeles-San Bernardino county lines, Mount Baden-Powell 9399 ft, Mount Burnham 8997 ft and Mount Wilson 5710 ft. Several lower mountains are in the northern, western, and southwestern parts of the county, including the San Emigdio Mountains, the southernmost part of Tehachapi Mountains and the Sierra Pelona Mountains.
Mount Wilson is a peak in the San Gabriel Mountains, located within the San Gabriel Mountains National Monument and Angeles National Forest in Los Angeles County, California.

Transverse Ranges

TransverseTransverse RangeCalifornia Transverse Ranges
The county is divided west-to-east by the San Gabriel Mountains, which are part of the Transverse Ranges of southern California, and are contained mostly within the Angeles National Forest.
The Transverse Ranges begin at the southern end of the California Coast Ranges and lie within Santa Barbara, Ventura, Los Angeles, San Bernardino and Riverside counties.

Riverside County, California

Riverside CountyRiversideRiverside Counties
The county originally included parts of what are now Kern, San Bernardino, Riverside, Inyo, Tulare, Ventura, and Orange counties.
When the initial 27 California counties were established in 1850 the area today known as Riverside County was divided between Los Angeles County and San Diego County.

Tehachapi Mountains

TehachapiTehachapisTehachapi crest
Most of the county's highest peaks are in the San Gabriel Mountains, including Mount San Antonio 10068 ft) at the Los Angeles-San Bernardino county lines, Mount Baden-Powell 9399 ft, Mount Burnham 8997 ft and Mount Wilson 5710 ft. Several lower mountains are in the northern, western, and southwestern parts of the county, including the San Emigdio Mountains, the southernmost part of Tehachapi Mountains and the Sierra Pelona Mountains.
The range extends for approximately 40 mi in southern Kern County and northwestern Los Angeles County.

Santa Clarita Valley

Santa ClaritaValley
Other population centers are found in the Santa Clarita Valley, Pomona Valley, Crescenta Valley and Antelope Valley.
Located in Los Angeles County, its main population center is the city of Santa Clarita which includes the communities of Canyon Country, Newhall, Saugus, and Valencia.

Santa Catalina Island (California)

Catalina IslandSanta Catalina IslandSanta Catalina
Los Angeles County includes San Clemente Island and Santa Catalina Island, which are part of the Channel Islands archipelago off the Pacific Coast.
Santa Catalina is part of the Channel Islands of California archipelago and lies within Los Angeles County.

San Clemente Island

San ClementeSan Clemente I
Los Angeles County includes San Clemente Island and Santa Catalina Island, which are part of the Channel Islands archipelago off the Pacific Coast.
It is owned and operated by the United States Navy, and is a part of Los Angeles County.

Pomona Valley

Pomona
Other population centers are found in the Santa Clarita Valley, Pomona Valley, Crescenta Valley and Antelope Valley.
The San Antonio Creek runs right through the center of the valley dividing the valley into west and east, and also acts as a section of the border between Los Angeles County and San Bernardino County.