List of municipalities in California in the context of "2020 United States Census"

Los Angeles (LA) is the most populous city in the U.S. state of California, and the commercial, financial, and cultural center of Southern California. With an estimated 3.88 million residents within the city limits as of 2024, it is the second-most populous city in the United States, behind New York City. Los Angeles has an ethnically and culturally diverse population, and is the principal city of a metropolitan area of 12.9 million people (2024). Greater Los Angeles, a combined statistical area that includes the Los Angeles and Riverside–San Bernardino metropolitan areas, is a sprawling metropolis of over 18.5 million residents.

The majority of the city proper lies in the Los Angeles Basin adjacent to the Pacific Ocean in the west and extending partly through the Santa Monica Mountains and north into the San Fernando Valley, with the city bordering the San Gabriel Valley to its east. It covers about 469 square miles (1,210 km), and is the county seat and most populated city of Los Angeles County, which is the most populous county in the United States with an estimated 9.86 million residents as of 2022. It is the third-most visited city in the U.S. with over 2.7 million visitors as of 2023.

Stockton is a city in and the county seat of San Joaquin County in the Central Valley of the U.S. state of California. It is the most populous city in the county, the 11th-most populous city in California and the 60th-most populous city in the United States. Stockton's population in 2020 was 320,804. It was named an All-America City in 1999, 2004, 2015, and again in 2017 and 2018. The city is located on the San Joaquin River in the northern San Joaquin Valley. It lies at the southeastern corner of a large inland river delta that isolates it from other nearby cities such as Sacramento and those of the San Francisco Bay Area.

Stockton was founded by Charles Maria Weber in 1849 after he acquired Rancho Campo de los Franceses. The city is named after famed Mexican–American War commodore Robert F. Stockton, and it was the first community in California to have a name not of Spanish or Native American origin.

Hayward is a city in Alameda County, California, United States, in the East Bay subregion of the San Francisco Bay Area. With a population of 162,954 as of 2020, Hayward is the sixth largest city in the Bay Area, and the third largest in Alameda County. Hayward was ranked as the 36th most populous municipality in California. It is included in the San Francisco–Oakland–San Jose Metropolitan Statistical Area by the US Census. It is located primarily between Castro Valley, San Leandro and Union City, and lies at the eastern terminus of the San Mateo–Hayward Bridge. The city was devastated early in its history by the 1868 Hayward earthquake. From the early 20th century until the beginning of the 1980s, Hayward's economy was dominated by its now defunct food canning and salt production industries.

Anaheim (/ˈænəhaɪm/ AN-ə-hyme) is a city in northern Orange County, California, United States, part of the Greater Los Angeles area. As of the 2020 census, the city had a population of 346,824, making it the most populous city in Orange County, the tenth-most populous city in California, and the 57th-most populous city in the United States. The second largest city in Orange County in terms of land area, Anaheim is known for being the home of the Disneyland Resort, the Anaheim Convention Center, and two professional sports teams: the Los Angeles Angels of Major League Baseball (MLB) and the Anaheim Ducks of the National Hockey League (NHL). It also served as the home of the Los Angeles Rams of the National Football League (NFL) from 1980 through 1994.

Anaheim was founded by fifty German families in 1857 and incorporated as the second city in Los Angeles County on March 18, 1876; Orange County was split off from Los Angeles County in 1889. Anaheim remained largely an agricultural community until Disneyland opened on July 17, 1955. This led to the construction of several hotels and motels around the area, and residential districts in Anaheim soon followed. The city also developed into an industrial center, producing electronics, aircraft parts and canned fruit. Anaheim is a charter city.