Orange County is a county in the U.S. state of California. As of the 2010 census, the population was 3,010,232 making it the third-most populous county in California, the sixth-most populous in the United States, and more populous than twenty-one U.S. states. Its county seat is Santa Ana. It is the second most densely populated county in the state, second only to San Francisco County. The county’s four largest cities, Anaheim, Santa Ana, Irvine, and Huntington Beach each have populations exceeding 200,000. Several of Orange County’s cities are on the Pacific coast, including Huntington Beach, Newport Beach, Laguna Beach, and San Clemente.
The county is famous for its tourism as the home of attractions like Disneyland, Knott’s Berry Farm, and several beaches along its more than 40 miles (64 km) of coastline. It is also known for its political conservatism — a 2005 academic study listed three Orange County cities as among America’s 25 most conservative, making it one of two counties in the nation containing more than one such city. (Maricopa County, Arizona also has three cities on the list.) It is part of the Tech Coast.