California is a U.S. state in the Pacific Region of the United States. With 39.5 million residents, California is the most populous state in the United States and the third largest by area. The state capital is Sacramento. The Greater Los Angeles Area and the San Francisco Bay Area are the nation's second- and fifth-most populous urban regions, with 18.7 million and 8.8 million residents respectively. Los Angeles is California's most populous city, and the country's second-most populous, after New York City. There are currently 881 California airports in our database.