Irvine (/ˈɜːrvaɪn/ UR-vyn) is an affluent city in Orange County, California, United States. It is a planned city; the Irvine Company started developing the area in the 1960s. Formally incorporated on December 28, 1971, the 66-square-mile (170 km2) city had a population of 212,375 as of the 2010 census; in 2016 the city's population was 258,386.
A number of corporations, particularly in the technology and semiconductor sectors, have their national or international headquarters in Irvine. Irvine is also home to several higher education institutions including the University of California, Irvine (UCI), Concordia University, Irvine Valley College, the Orange County Center of the University of Southern California (USC), and campuses of California State University Fullerton (CSUF), University of La Verne, and Pepperdine University.