About San Diego
San Diego is located in California, United States, and serves as the seat of San Diego County. With a population of 1,386,932 recorded in 2020, it is the second-largest city in the state and covers an area of 964.5 square kilometers. The city has existed as a municipality since 1769. Notable features include the San Diego Zoo, the University of California, San Diego, and San Diego International Airport. San Diego maintains twin town relationships with Vladivostok, Alcalá de Henares, Campinas, Edinburgh, and Jalalabad. Additional infrastructure and sites within the city include San Diego State University, San Diego Stadium, Balboa Park, SeaWorld San Diego, and Cabrillo National Monument.
AI-assisted description based on geographic data and editorial notes.