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Laguna Beach (; Laguna, Spanish for "Lagoon") is a seaside resort city located in southern Orange County, California, in the United States. It is known for a mild year-round climate, scenic coves, environmental preservation, and an artist community. The population in the 2020 census was 22,827. Per the population estimate in July 2019, the total population of Laguna Beach city was 22,827.

Historically settled by Paleoindians, the Tongva people, and then Mexico, the location became part of the United States following the Mexican–American War. Laguna Beach was settled in the 1870s and officially founded in 1887, and in 1927 its current government was incorporated as a city. The city adopted a council-manager form for its government in 1944. The city has remained relatively isolated from urban encroachment by its surrounding hills, limited highway access, and a dedicated greenbelt. The Laguna Beach coastline is protected by 5.88 miles (9.46 km) of state marine reserve and an additional 1.21 miles (1.95 km) of state conservation area.

Tourism is the primary industry with an estimated six million people visiting the community annually. Large annual events include the Pageant of the Masters, Festival of Arts, Sawdust Art Festival, Art-A-Fair, Bluewater Music Festival, and Kelpfest.