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Districts in California geographically divide the U.S. state into overlapping regions for political and administrative purposes.


History of California political districts

From the founding of the state until 2008, the responsibility of redrawing the state's Congressional, Assembly, Senate, and Board of Equalization
district A district is a type of administrative division that in some countries is managed by the local government. Across the world, areas known as "districts" vary greatly in size, spanning regions or county, counties, several municipality, municip ...
s had been exercised by the
California State Legislature The California State Legislature is the bicameral state legislature of the U.S. state of California, consisting of the California State Assembly (lower house with 80 members) and the California State Senate (upper house with 40 members). ...
. In November 2008, California voters passed Proposition 11, the Voters FIRST Act, which took political redistricting responsibility away from the state legislature and instead established a 14-member statewide redistricting commission composed of five Republicans, five Democrats, and four not affiliated with either of those two parties but registered with another party or as decline-to-state. The
California Citizens Redistricting Commission The California Citizens Redistricting Commission is the redistricting commission for the California, State of California responsible for determining the boundaries of districts for the California State Senate, State Senate, California State Asse ...
was initially charged with updating the state assembly, senate, and Board of Equalization district boundaries starting with the 2010 census. Another initiative, Proposition 20, passed in 2010, expanded the Commission responsibilities to also include the state Congressional districts.


Congressional districts

California is divided into 52 Congressional districts. Each district elects a representative to serve in the
United States House of Representatives The United States House of Representatives is a chamber of the Bicameralism, bicameral United States Congress; it is the lower house, with the U.S. Senate being the upper house. Together, the House and Senate have the authority under Artic ...
as part of the California's congressional delegation. California's current districts were drawn in 2021 by a
California Citizens Redistricting Commission The California Citizens Redistricting Commission is the redistricting commission for the California, State of California responsible for determining the boundaries of districts for the California State Senate, State Senate, California State Asse ...
. The new boundaries took effect for the June 7, 2022 primary.


State legislative districts


State Senate districts

California is divided into 40 State Senate districts, each of which elects a senator to the
State Senate In the United States, the state legislature is the legislative branch in each of the 50 U.S. states. A legislature generally performs state duties for a state in the same way that the United States Congress performs national duties at ...
. Twice the size of an Assembly district, each senate district contains about 931,000 people. The combined Senate roster is available from . The members of the California Senate Republican caucus are listed at . Prior to 1968, state senate districts were restricted such that one county could only hold at most one seat. This led to the situation of
Los Angeles County 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 individua ...
, with 6 million residents as of 1968, receiving 600 times less representation than residents of Alpine County and Calaveras County, some of California's least populous counties. The '' Reynolds v. Sims'' decision by the
United States Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that turn on question ...
compelled all states to draw up districts that were apportioned by population rather than geography. As such, boundaries were changed such that equal representation was provided.


State Assembly districts

California is divided into 80 State Assembly districts, each of which elects a member to the State Assembly. Each assembly district contains about 466,000 people. Each Assembly member is limited to three terms by a referendum passed by California voters. In March 2008, Proposition 93 unsuccessfully attempted to change term limits to a maximum of twelve years or six terms instead of three. The California Assembly Democratic Caucus members are listed at . The California Assembly Republican Caucus members are listed at .


California Appellate Court districts

The California Court of Appeal is divided into six appellate districts, based on geography. Some of the appellate districts are further divided into Divisions.


First District

The California Court of Appeal for the First District is located in
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
. Its jurisdiction is over the following counties: Alameda, Contra Costa, Del Norte, Humboldt,
Lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...
, Marin, Mendocino, Napa,
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
, San Mateo, Solano, and Sonoma. It is divided into five non-geographical divisions with four justices each.


Second District

The California Court of Appeal for the Second District has its main courthouse in
Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
and the secondary courthouse, hosting Division Six, in Ventura. Division Six handles appeals from
San Luis Obispo ; ; ; Chumashan languages, Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, California, United States. Located on the Central Coast (California), Central Coast of California, San Luis Obispo is roughly halfway betwee ...
, Santa Barbara, and Ventura Counties, while Divisions One through Five, Seven, and Eight handle appeals from
Los Angeles County 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 individua ...
. Each division has four justices.


Third District

The California Court of Appeal for the Third District is located in
Sacramento Sacramento ( or ; ; ) is the capital city of the U.S. state of California and the seat of Sacramento County. Located at the confluence of the Sacramento and American Rivers in Northern California's Sacramento Valley, Sacramento's 2020 p ...
. Its jurisdiction is over the following counties: Alpine, Amador,
Butte In geomorphology, a butte ( ) is an isolated hill with steep, often vertical sides and a small, relatively flat top; buttes are smaller landforms than mesas, plateaus, and table (landform), tablelands. The word ''butte'' comes from the French l ...
, Calaveras, Colusa, El Dorado, Glenn, Lassen, Modoc, Mono,
Nevada Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th ...
, Placer, Plumas,
Sacramento Sacramento ( or ; ; ) is the capital city of the U.S. state of California and the seat of Sacramento County. Located at the confluence of the Sacramento and American Rivers in Northern California's Sacramento Valley, Sacramento's 2020 p ...
, San Joaquin, Shasta, Sierra, Siskiyou, Sutter, Tehama,
Trinity The Trinity (, from 'threefold') is the Christian doctrine concerning the nature of God, which defines one God existing in three, , consubstantial divine persons: God the Father, God the Son (Jesus Christ) and God the Holy Spirit, thr ...
, Yolo, and Yuba. It has 11 justices and is not divided into divisions.


Fourth District

The California Court of Appeal for the Fourth District is unique in that it is divided into three geographical divisions that are administratively separate, which even have different case number systems, and yet remain referred to as a single district.


Division One

The Division One courthouse is located in
San Diego San Diego ( , ) is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.4 million, it is the List of United States cities by population, eighth-most populous city in t ...
. It handles appeals from Imperial and
San Diego San Diego ( , ) is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.4 million, it is the List of United States cities by population, eighth-most populous city in t ...
Counties. It has 10 justices.


Division Two

The Division Two courthouse is located in Riverside. It handles appeals from Inyo, Riverside, and San Bernardino Counties. It has seven justices. It is the only California appellate court that issues a tentative opinion before oral argument.


Division Three

The Division Three courthouse is located in Santa Ana. It handles appeals from Orange County. It has eight justices.


Fifth District

The California Court of Appeal for the Fifth District is located in Fresno. Its jurisdiction covers the following counties: Fresno, Kern, Kings, Madera, Mariposa, Merced, Stanislaus, Tulare, and Tuolumne. It has nine justices.


Sixth District

The California Court of Appeal for the Sixth District is located in San Jose. Its jurisdiction covers San Benito, Santa Clara, Santa Cruz, and Monterey Counties. It has seven justices.


Board of Equalization districts

California's Board of Equalization is a public agency charged with tax administration and fee collection. For the purposes of tax administration, the Board of Equalization divides the state into four Equalization Districts, each with its own elected board member.State Board of Equalization
Board Members
/ref>


First District

The first Equalization District is made up of the following counties: Alameda, Colusa, Contra Costa, Del Norte, Humboldt,
Lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...
, Marin, Mendocino, Monterey, Napa, San Benito,
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
,
San Luis Obispo ; ; ; Chumashan languages, Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, California, United States. Located on the Central Coast (California), Central Coast of California, San Luis Obispo is roughly halfway betwee ...
, San Mateo, Santa Clara, Santa Cruz, Solano, Sonoma,
Trinity The Trinity (, from 'threefold') is the Christian doctrine concerning the nature of God, which defines one God existing in three, , consubstantial divine persons: God the Father, God the Son (Jesus Christ) and God the Holy Spirit, thr ...
, Yolo, and a portion of Santa Barbara.


Second District

The second Equalization District is made up of the following counties: Alpine, Amador,
Butte In geomorphology, a butte ( ) is an isolated hill with steep, often vertical sides and a small, relatively flat top; buttes are smaller landforms than mesas, plateaus, and table (landform), tablelands. The word ''butte'' comes from the French l ...
, Calaveras, El Dorado, Fresno, Glenn, Inyo, Kern, Kings, Lassen, Madera, Mariposa, Merced, Modoc, Mono,
Nevada Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th ...
, Placer, Plumas,
Sacramento Sacramento ( or ; ; ) is the capital city of the U.S. state of California and the seat of Sacramento County. Located at the confluence of the Sacramento and American Rivers in Northern California's Sacramento Valley, Sacramento's 2020 p ...
, San Joaquin, Shasta, Sierra, Siskiyou, Stanislaus, Sutter, Tehama, Tulare, Tuolumne, Ventura, Yuba, a portion of
Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
, a portion of San Bernardino, and a portion of Santa Barbara.


Third District

The third Equalization District is made up of the following counties: Imperial, Orange, Riverside,
San Diego San Diego ( , ) is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.4 million, it is the List of United States cities by population, eighth-most populous city in t ...
, a portion of
Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
, and a portion of San Bernardino.


Fourth District

The fourth Equalization District is made up of 73 of the 88 cities in
Los Angeles County 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 individua ...
:
Agoura Hills Agoura Hills () is a city situated in the Santa Monica Mountains region of Los Angeles County, California, United States. With a population of 20,330 as of the 2010 United States census, 2010 census, which decreased to 20,299 in 2020. Agoura H ...
, Alhambra, Arcadia, Artesia, Avalon, Baldwin Park,
Bell A bell /ˈbɛl/ () is a directly struck idiophone percussion instrument. Most bells have the shape of a hollow cup that when struck vibrates in a single strong strike tone, with its sides forming an efficient resonator. The strike may be m ...
, Bell Gardens, Bellflower,
Beverly Hills Beverly Hills is a city located in Los Angeles County, California, United States. A notable and historic suburb of Los Angeles, it is located just southwest of the Hollywood Hills, approximately northwest of downtown Los Angeles. Beverly Hil ...
, Burbank, Calabasas, Carson, Cerritos, City of Industry,
Commerce Commerce is the organized Complex system, system of activities, functions, procedures and institutions that directly or indirectly contribute to the smooth, unhindered large-scale exchange (distribution through Financial transaction, transactiona ...
, Compton,
Covina Covina (Help:IPA/English, /koviːnə/) is a city in the San Gabriel Valley region of Los Angeles County, California, United States, about east of downtown Los Angeles The population was 51,268 according to the 2020 United States census, 2020 ...
, Cudahy, Culver City, Diamond Bar, Downey, El Monte, El Segundo, Gardena, Glendale, Glendora, Hawaiian Gardens, Hawthorne,
Hermosa Beach Hermosa Beach (, Spanish language, Spanish for "Beautiful") is a beachfront city in Los Angeles County, California, United States. Its population was 19,728 at the 2020 United States census, 2020 U.S. Census. The city is located in the South Ba ...
, Hidden Hills, Huntington Park, Inglewood, La Cañada Flintridge, La Habra Heights, La Mirada, La Puente, Lakewood, Lawndale, Lomita,
Long Beach Long Beach is a coastal city in southeastern Los Angeles County, California, United States. It is the list of United States cities by population, 44th-most populous city in the United States, with a population of 451,307 as of 2022. A charter ci ...
,
Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
, Lynwood, Malibu, Manhattan Beach, Maywood,
Monrovia Monrovia () is the administrative capital city, capital and largest city of Liberia. Founded in 1822, it is located on Cape Mesurado on the Atlantic Ocean, Atlantic coast and as of the 2022 census had 1,761,032 residents, home to 33.5% of Liber ...
, Montebello, Monterey Park, Norwalk,
Paramount Paramount (from the word ''paramount'' meaning "above all others") may refer to: Entertainment and music companies * Paramount Global, also known simply as Paramount, an American mass media company formerly known as ViacomCBS. **Paramount Picture ...
, Pasadena, Pico Rivera, Redondo Beach, Rosemead, San Fernando, San Gabriel,
San Marino San Marino, officially the Republic of San Marino, is a landlocked country in Southern Europe, completely surrounded by Italy. Located on the northeastern slopes of the Apennine Mountains, it is the larger of two European microstates, microsta ...
, Santa Fe Springs,
Santa Monica Santa Monica (; Spanish language, Spanish: ''Santa Mónica'') is a city in Los Angeles County, California, Los Angeles County, situated along Santa Monica Bay on California's South Coast (California), South Coast. Santa Monica's 2020 United Sta ...
, Sierra Madre, Signal Hill, South El Monte, South Gate, South Pasadena, Temple City, Torrance, Vernon,
Walnut A walnut is the edible seed of any tree of the genus '' Juglans'' (family Juglandaceae), particularly the Persian or English walnut, '' Juglans regia''. They are accessory fruit because the outer covering of the fruit is technically an i ...
, West Covina, West Hollywood, Westlake Village, and Whittier.


See also

* Elections in California * Politics of California *
Government of California The government of California is the governmental structure of the U.S. state of California as established by the Constitution of California, California Constitution. California uses the separation of powers system to structure its government. It ...
* California ballot proposition * List of California ballot propositions *
Local government in California The government of California has an extensive system of local government that manages public functions throughout the state. Like most states, California is divided into County (United States), counties, of which there are 58 (including San Franc ...


References


External links


California Legislative District Maps (1911-Present)
(out of date)
California Courts of AppealCalifornia Board of EqualizationCalifornia State AssemblyCurrent Candidates for the State Assembly

California Citizens Redistricting Commission website
{{California Politics of California Government of California