Vista  is a city in San Diego County, California. Vista is a medium-sized city within the San Diego-Carlsbad, CA Metropolitan Area. As of the 2020 Census, Vista had a population of 98,381. Current data estimates a 2023 population of 99,835. Vista’s sphere of influence also includes portions of unincorporated San Diego County to the north and east, with a county island in the central west. Located just 7 mi (11 km) inland from the Pacific Ocean, it has a Mediterranean climate.

Much of Vista’s current territory was once part the Mexican land grants Rancho Buena Vista and Rancho Guajome. A post office was established on October 9, 1882, and Vista was incorporated as a city on January 28, 1963, later becoming a charter city on June 13, 2007.