Districts in California geographically divide the U.S. state into overlapping regions for political and administrative purposes.
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 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.
Each Assembly member is limited to three terms by a referendum passed by California voters.
The California Court of Appeal is divided into six appellate districts, based on geography.
Its jurisdiction is over the following counties: Alpine, Amador, Butte, Calaveras, Colusa, El Dorado, Glenn, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Sacramento, San Joaquin, Shasta, Sierra, Siskiyou, Sutter, Tehama, Trinity, Yolo, and Yuba.
Its jurisdiction covers the following counties: Fresno, Kern, Kings, Madera, Mariposa, Merced, Stanislaus, Tulare, and Tuolumne.
California's Board of Equalization is a public agency charged with tax administration and fee collection.
The second Equalization District is made up of the following counties: Alpine, Amador, Butte, Calaveras, El Dorado, Fresno, Glenn, Inyo, Kern, Kings, Lassen, Madera, Mariposa, Merced, Modoc, Mono, Nevada, Placer, Plumas, Sacramento, San Joaquin, Shasta, Sierra, Siskiyou, Stanislaus, Sutter, Tehama, Tulare, Tuolumne, Ventura, Yuba, a portion of Los Angeles, a portion of San Bernardino, and a portion of Santa Barbara.
The fourth Equalization District is made up of 73 of the 88 cities in Los Angeles County: Agoura Hills, Alhambra, Arcadia, Artesia, Avalon, Baldwin Park, Bell, Bell Gardens, Bellflower, Beverly Hills, Burbank, Calabasas, Carson, Cerritos, City of Industry, Commerce, Compton, Covina, Cudahy, Culver City, Diamond Bar, Downey, El Monte, El Segundo, Gardena, Glendale, Glendora, Hawaiian Gardens, Hawthorne, Hermosa Beach, Hidden Hills, Huntington Park, Inglewood, La Cañada Flintridge, La Habra Heights, La Mirada, La Puente, Lakewood, Lawndale, Lomita, Long Beach, Los Angeles, Lynwood, Malibu, Manhattan Beach, Maywood, Monrovia, Montebello, Monterey Park, Norwalk, Paramount, Pasadena, Pico Rivera, Redondo Beach, Rosemead, San Fernando, San Gabriel, San Marino, Santa Fe Springs, Santa Monica, Sierra Madre, Signal Hill, South El Monte, South Gate, South Pasadena, Temple City, Torrance, Vernon, Walnut, West Covina, West Hollywood, Westlake Village, and Whittier.