Incorporated on November 28, 1911, the City of Chula Vista is the second-largest municipality in San Diego County, governing 52.09 square miles of South Bay territory from its administrative headquarters at 276 Fourth Avenue. City departments share the Fourth Avenue campus with civic resources including the Chula Vista Public Library Civic Center Branch, which anchors the block as both a research facility and a public meeting venue for council-related hearings. A council-manager government structure places legislative authority with a five-member city council and a directly elected mayor, while a city manager oversees day-to-day operations across departments that include public works, development services, police, fire, and parks and recreation. The municipality's Bayfront redevelopment, Otay Ranch master-planned expansion, and Third Avenue Village revitalization drive ongoing infrastructure investment, creating development opportunities tracked by residential and commercial firms such as Gateway Chula Vista. As of the 2020 Census, Chula Vista's population of 275,487 places it among California's 15 largest cities, with a tax base supported by major employers in healthcare, education, retail, and government services concentrated along the Broadway, Eastlake Parkway, and Third Avenue corridors.