Explore Fountain Valley local geography, civic resources and voter guides, with dated official population and registration facts for Orange County.
At a glance: Fountain Valley is an incorporated city in Orange County. Population: 56,596 (California Department of Finance estimate as of January 1, 2026). Registered voters: 39,150 (California Secretary of State, as of September 4, 2026).
Fountain Valley’s name comes from artesian wells and abundant water, according to the city’s historical account. The lowland area was once known locally as Gospel Swamps before drainage canals enabled farming. The city records incorporation in 1957. These are historical explanations of place identity, not claims that the old crops or wetland conditions persist unchanged today. The city’s parks resource distinguishes municipal neighborhood parks and Fountain Valley Sports Park from the county side of Mile Square Park. A shared geographic name does not mean shared operating rules. Its City Parks Map and current facility resources are useful for checking the relevant location, operator and amenities. The City Clerk supports the council and several named municipal authorities, maintains the municipal code and handles public-records requests. It also provides Clerk of the Board services to the Orange County Council of Governments through a shared-services agreement. That arrangement connects agencies administratively without merging their separate legislative responsibilities.
The city history connects it to artesian wells and the area’s water supply, with incorporation recorded in 1957.
The municipal parks resource distinguishes city-operated parks from the county side of Mile Square Park. Check the operator for the particular location.
No. Its official page identifies several municipal authorities and shared Clerk of the Board services for the Orange County Council of Governments.
39,150 (California Secretary of State, as of September 4, 2026).
CA Slates began with shared voter guides in 2012 and expanded into its current publication family and connected program.