Orange County is a county in the U.S. state of California. Its county seat is Santa Ana. As of the 2010 census, its population was 3,010,232, up from 2,846,293 at the 2000 census, making it the third most populous county in California, behind Los Angeles County and San Diego County. It is the sixth most populous county in the United States as of 2009 while at the same time is the smallest area-wise county in Southern California, being roughly half the size of the next smallest county, Ventura. The county is famous for its tourism, as the home of such attractions as Disneyland and Knott's Berry Farm, as well as several beaches along its more than 40 miles (64 km) of coastline. It is known for its affluence and political conservatism – a 2005 academic study listed three Orange County cities as being among America's 25 "most conservative," making it the only county in the country containing more than one such city.