This is a list of sister cities in the United States state of California. Sister cities, known in Europe as twin towns, are cities which partner with each other to promote human contact and cultural links. This partnering is not limited to cities and often includes counties, regions, states and other sub-national entities.
Many Californian jurisdictions work with foreign cities through Sister Cities International, an organization whose goal is to "promote peace through mutual respect, understanding, and cooperation."
A Alameda
Dumaguete, Philippines Jiangyin, China Varazze, Italy Yeongdong, South Korea
Alameda County Taoyuan, Taiwan
Alhambra
Rizhao, China Sanya, China
Anaheim
Mito, Japan Vitoria-Gasteiz, Spain
Antioch Chichibu, Japan
Arcadia
Taizhou, China Tripoli, Greece
Arcata Camoapa, Nicaragua
Azusa Zacatecas, Mexico
B Bakersfield
Amritsar, India Bucheon, South Korea Cixi, China Partyzanski (Minsk), Belarus Querétaro, Mexico Wakayama, Japan
Baldwin Park
Taxco de Alarcón, Mexico Tototlán, Mexico
Bellflower Ahome, Mexico
Benicia Tula de Allende, Mexico
Berkeley
Browning, United States Gao, Mali Gongju, South Korea Haidian (Beijing), China Jena, Germany Las Vegas, Honduras León, Nicaragua Mathopestad (Rustenburg), South Africa Oukasie (Madibeng), South Africa Palma Soriano, Cuba Sakai, Japan San Antonio Los Ranchos, El Salvador Uma Bawang (Padawan), Malaysia Yondó, Colombia
Beverly Hills
Acapulco, Mexico Cannes, France Herzliya, Israel Pudong (Shanghai), China
Big Bear Lake Abtenau, Austria
Brea
Anseong, South Korea Hannō, Japan Lagos de Moreno, Mexico
Buena Park Seongbuk (Seoul), South Korea
Burbank
Arezzo, Italy Gaborone, Botswana Incheon, South Korea Ōta, Japan Solna, Sweden
C Calabasas
Anqing, China Mevaseret Zion, Israel
Calexico Mexicali, Mexico
Carlsbad
Futtsu, Japan Karlovy Vary, Czech Republic
Carson
La Carlota, Philippines Sōka, Japan Wanju, South Korea
Cathedral City Tequila, Mexico
Cerritos Loreto, Mexico
Chula Vista
Cebu City, Philippines Irapuato, Mexico Odawara, Japan
Coloma Clunes (Hepburn), Australia
Compton
Apia, Samoa Onitsha, Nigeria
Concord Kitakami, Japan
Contra Costa County Taichung, Taiwan
Corona Ocotlán, Mexico
Costa Mesa Wyndham, Australia
Covina Xalapa, Mexico
Crescent City Rikuzentakata, Japan
Culver City
Capo d'Orlando, Italy Iksan, South Korea Kaizuka, Japan Lethbridge, Canada Uruapan, Mexico
Cupertino
Copertino, Italy Bhubaneswar, India Hsinchu, Taiwan Toyokawa, Japan
D Daly City
Izumisano, Japan Quezon City, Philippines
Davis
Huishan (Wuxi), China Inuyama, Japan Los Baños, Philippines Muñoz, Philippines Qufu, China Rutilio Grande, El Salvador Sangju, South Korea Uman, Ukraine
Delano
Arida, Japan Asti, Italy Jacona, Mexico Kalibo, Philippines Tangancícuaro, Mexico
Diamond Bar Sanxia (New Taipei), Taiwan
Dinuba Malsch, Germany
Downey
Alajuela, Costa Rica Efrat, Israel
Fresnillo, Mexico Guadalajara, Mexico San Quintín, Mexico Taghmaconnell, Ireland
Dublin Bray, Ireland
E El Cajon
Comondu, Mexico Sulzfeld, Germany
El Dorado County Warabi, Japan
El Monte Zamora, Mexico
Elk Grove Concepción de Ataco, El Salvador
Encinitas Amakusa, Japan
Escondido Itoshima, Japan
Eureka
Kamisu, Japan Nelson, New Zealand
F Fairfield Nirasaki, Japan
Folsom
Jiaohe, China Pieve del Grappa, Italy
Fort Bragg Ōtsuchi, Japan
Foster City Inagi, Japan
Fremont
Fukaya, Japan Horta, Portugal Jaipur, India Lipa, Philippines Puerto Peñasco, Mexico
Fresno
Châteauroux, France Kōchi, Japan Münster, Germany Taishan, China Vagharshapat, Armenia
Fullerton
Fukui, Japan Morelia, Mexico Yongin, South Korea
G Garden Grove Anyang, South Korea
Gardena
Huatabampo, Mexico Ichikawa, Japan
Gilroy
Angra do Heroísmo, Portugal Koror, Palau Monticelli d'Ongina, Italy Saint-Clar, France Takko, Japan Tecate, Mexico
Glendale
Boeun, South Korea Gimpo, South Korea Goseong, South Korea Gyumri, Armenia Higashiōsaka, Japan Kapan, Armenia Rosarito Beach, Mexico Santiago, Dominican Republic Tlaquepaque, Mexico
Glendora Mooka, Japan
Grass Valley
Bodmin, England, United Kingdom Limana, Italy
Greenfield Acámbaro, Mexico
Grover Beach Narvacan, Philippines
Gustine Angra do Heroísmo, Portugal
H Half Moon Bay Kariwa, Japan
Hanford Setana, Japan
Hayward
Faro, Portugal Funabashi, Japan Ghazni, Afghanistan San Felipe, Mexico Yixing, China
Hemet
Kushimoto, Japan Marumori, Japan
Hercules Tsushima, Japan
Hermosa Beach Loreto, Mexico
Highland Lachin, Azerbaijan
Hollister Katō, Japan
Huntington Beach
Anjō, Japan Northern Beaches, Australia
Huntington Park
Puebla, Mexico Rosarito Beach, Mexico San Julián, Mexico Yahualica de González Gallo, Mexico
I Imperial Beach White Rock, Canada
Irvine
Hermosillo, Mexico Seocho (Seoul), South Korea Taoyuan, Taiwan Tsukuba, Japan
Irwindale Salvatierra, Mexico
K Kerman Kannami, Japan
L La Cañada Flintridge Villanueva de la Cañada, Spain
La Mirada Isehara, Japan
Laguna Beach
Los Cabos, Mexico Menton, France St Ives, England, United Kingdom
Laguna Niguel Al-Qa'im, Iraq
Lathrop Bacarra, Philippines
Lindsay Ono, Japan
Livermore
Quetzaltenango, Guatemala Snezhinsk, Russia Yotsukaidō, Japan
Livingston
Jalostotitlán, Mexico Yingtan, China
Lodi
Kōfu, Japan Lodi, Italy
Loma Linda
Libertador San Martín, Argentina Manipal, India
Lomita Takaishi, Japan
Lompoc
Cheyenne, United States Inca, Spain Lake Placid, United States Locarno, Switzerland Namwon, South Korea
Long Beach
Mombasa, Kenya Phnom Penh, Cambodia Qingdao, China Sochi, Russia Taoyuan, Taiwan Yokkaichi, Japan
Los Altos
Greater Bendigo, Australia Rustington, England, United Kingdom Shilin (Taipei), Taiwan Syktyvkar, Russia
Los Angeles
Athens, Greece Auckland, New Zealand Beirut, Lebanon Berlin, Germany Bordeaux, France Busan, South Korea Eilat, Israel Giza, Egypt Guangzhou, China Ischia, Italy Jakarta, Indonesia Kaunas, Lithuania Lusaka, Zambia Makati, Philippines Mexico City, Mexico Mumbai, India Nagoya, Japan Saint Petersburg, Russia Salvador, Brazil San Salvador, El Salvador Split, Croatia Taipei, Taiwan
Vancouver, Canada Yerevan, Armenia
Los Angeles County New Taipei, Taiwan
Los Gatos
Listowel, Ireland Zihuatanejo de Azueta, Mexico
Lynwood
Aguascalientes, Mexico Talpa de Allende, Mexico Zacatecas, Mexico
M Madera Yilan, Taiwan
Malibu Lijiang, China
Martinez
Dunbar, Scotland, United Kingdom Hanchuan, China Isola delle Femmine, Italy Milazzo, Italy Stresa, Italy
Marysville Beigang (Yunlin), Taiwan
Mendocino Ōmachi, Japan
Menlo Park
Bizen, Japan Galway, Ireland Kochi, India Xinbei (Changzhou), China
Merced
Albury, Australia
Somoto, Nicaragua
Millbrae
Mosta, Malta La Serena, Chile
Milpitas
Dagupan, Philippines Huizhou, China Tsukuba, Japan
Modesto
Aguascalientes, Mexico Khmelnytskyi, Ukraine Kurume, Japan Laval, France Mengzi, China Vernon, Canada Vijayawada, India
Montebello
Ashiya, Japan Stepanakert, Azerbaijan
Monterey
Dubrovnik, Croatia Isola delle Femmine, Italy Kuşadası, Turkey Lankaran, Azerbaijan Lleida, Spain Nanao, Japan Tainan, Taiwan
Monterey Park
Morelia, Mexico Nachikatsuura, Japan Quanzhou, China Yeongdeungpo (Seoul), South Korea Yonghe (New Taipei), Taiwan
Moreno Valley San Juan de los Lagos, Mexico
Morgan Hill
Ameca, Mexico Headford, Ireland Mizuho, Japan San Casciano in Val di Pesa, Italy San Martín de Hidalgo, Mexico Seferihisar, Turkey
Mountain View
Hasselt, Belgium Iwata, Japan
N Napa
Casablanca, Chile Iwanuma, Japan Launceston, Australia
Nevada City Penzance, England, United Kingdom
Newport Beach
Antibes, France Ensenada, Mexico Okazaki, Japan
Norwalk
Hermosillo, Mexico Morelia, Mexico
Novato Greater Shepparton, Australia
O Oakland
Bahir Dar, Ethiopia Dalian, China Da Nang, Vietnam Fukuoka, Japan Funchal, Portugal Livorno, Italy Nakhodka, Russia Ocho Rios, Jamaica Santiago de Cuba, Cuba Sekondi-Takoradi, Ghana
Oceanside
Fuji, Japan Kisarazu, Japan Pago Pago, American Samoa
Ontario
Ahome, Mexico Brockville, Canada Jieyang, China Mocorito, Mexico Salvador Alvarado, Mexico
Orange
Orange, Australia Querétaro, Mexico Timaru, New Zealand
Orange County Tianjin, China
Orinda Tábor, Czech Republic
Oxnard Ocotlán, Mexico
P Pacifica Balaguer, Spain
Palm Desert
Gisborne, New Zealand Zihuatanejo de Azueta, Mexico
Palmdale Poncitlán, Mexico
Palo Alto
Albi, France Enschede, Netherlands Heidelberg, Germany Linköping, Sweden Oaxaca de Juárez, Mexico Palo, Philippines Tsuchiura, Japan Yangpu (Shanghai), China
Paramount Tepic, Mexico
Pasadena
Dakar-Plateau, Senegal Järvenpää, Finland Ludwigshafen am Rhein, Germany Mishima, Japan Vanadzor, Armenia Xicheng (Beijing), China
Pico Rivera San Luis Potosí, Mexico
Pittsburg
Isola delle Femmine, Italy Pohang, South Korea Shimonoseki, Japan Yahualica de González Gallo, Mexico
Pleasanton
Blairgowrie and Rattray, Scotland, United Kingdom Fergus (Centre Wellington), Canada Tulancingo de Bravo, Mexico
Plymouth Jocotepec, Mexico
Porterville
La Barca, Mexico Hamamatsu, Japan
R Rancho Cordova Turrialba, Costa Rica
Rancho Palos Verdes Sakura, Japan
Redlands
Hino, Japan Linli, China San Miguel de Allende, Mexico
Redondo Beach
Ensenada, Mexico Itoman, Japan La Paz, Mexico Zhangjiagang, China
Redwood City
Aguililla, Mexico Colima, Mexico Zapotlán el Grande, Mexico Zhuhai, China
Reedley Tongyeong, South Korea
Richmond
Regla (Havana), Cuba Shimada, Japan Zhoushan, China
Ridgecrest Tepatitlán de Morelos, Mexico
Rio Vista Tobishima, Japan
Riverbank
Fuyang (Hangzhou), China Tamazula de Gordiano, Mexico
Riverside
Cần Thơ, Vietnam Cuautla, Mexico Ensenada, Mexico Erlangen, Germany Gangnam (Seoul), South Korea Hyderabad, India Jiangmen, China Obuasi, Ghana Sendai, Japan
Rohnert Park Hashimoto, Japan
Rosemead
Keelung, Taiwan Zapopan, Mexico
S Sacramento
Ashkelon, Israel Bethlehem, Palestine Chișinău, Moldova Hamilton, New Zealand Jinan, China Liestal, Switzerland Manila, Philippines Matsuyama, Japan Mexicali, Mexico Pasay, Philippines San Juan de Oriente, Nicaragua Sumy, Ukraine Yongsan (Seoul), South Korea
Salinas
Cebu City, Philippines Drogheda, Ireland Ichikikushikino, Japan Jerécuaro, Mexico Guanajuato, Mexico Seogwipo, South Korea Söke, Turkey
San Bernardino
Centro, Mexico Goyang, South Korea Herzliya, Israel Ifẹ, Nigeria Kigali, Rwanda Mexicali, Mexico Roxas, Philippines Tachikawa, Japan Tauranga, New Zealand Yushu, China Zavolzhye, Russia
San Bernardino County Taoyuan, Taiwan
San Bruno Narita, Japan
San Carlos
Metepec, Mexico Ōmura, Japan
San Clemente San Clemente del Tuyú, Argentina
San Diego
Alcalá de Henares, Spain Campinas, Brazil Cavite City, Philippines Edinburgh, Scotland, United Kingdom Jalalabad, Afghanistan Jeonju, South Korea Leon, Mexico Marseille, France Masovian Voivodeship, Poland Panama City, Panama Perth, Australia Taichung City, Taiwan Tema, Ghana Tijuana, Mexico Vladivostok, Russia
Yantai, China Yokohama, Japan
San Fernando Tepatitlán de Morelos, Mexico
San Francisco
Abidjan, Ivory Coast Amman, Jordan Assisi, Italy Barcelona, Spain Bengaluru, India Cork, Ireland Haifa, Israel Ho Chi Minh City, Vietnam Kiel, Germany Kraków, Poland Manila, Philippines
Seoul, South Korea Shanghai, China Sydney, Australia Taipei, Taiwan Thessaloniki, Greece Zurich, Switzerland
San Gabriel
Celaya, Mexico Changhua, Taiwan
San Jose
Dublin, Ireland Guadalajara, Mexico Okayama, Japan Pune, India San José, Costa Rica Tainan, Taiwan Veracruz, Mexico Yekaterinburg, Russia
San Leandro