El Cerrito is a city in Contra Costa County, California, United States, and forms part of the San Francisco Bay Area. It has a population of 25,9…El Cerrito is a city in Contra Costa County, California, United States, and forms part of the San Francisco Bay Area. It has a population of 25,962 according to the 2020 census. El Cerrito was founded by refugees from the 1906 San Francisco earthquake. It was incorporated in 1917 as a village with 1,500 residents. As of the census in 2022, there were 25,583 people and 10,637 households in the city.