Irvine is a master-planned city in Orange County, California, United States. The Irvine Company started developing the area in the 1960s and the city was 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 2018 the California Department of Finance estimated the city’s population at 276,176.
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.
The 2010 United States Census reported that Irvine had a population of 212,375. The population density was 3,195.8 people per square mile (1,233.9/km²). The racial makeup of Irvine was 107,215 (50.5%) White, 3,718 (1.8%) African American, 355 (0.2%) Native American, 83,176 (39.2%) Asian, 334 (0.2%) Pacific Islander, 5,867 (2.8%) from other races, and 11,710 (5.5%) from two or more races. Hispanic or Latino of any race were 19,621 persons (9.2%). Non-Hispanic Whites were 45.1% of the population.
The census reported that 205,819 people (96.9% of the population) lived in households, 5,968 (2.8%) lived in non-institutionalized group quarters, and 588 (0.3%) were institutionalized.
There were 78,978 households, out of which 26,693 (33.8%) had children under the age of 18 living in them, 40,930 (51.8%) were opposite-sex married couples living together, 7,545 (9.6%) had a female householder with no husband present, 2,978 (3.8%) had a male householder with no wife present. There were 3,218 (4.1%) unmarried opposite-sex partnerships, and 463 (0.6%) same-sex married couples or partnerships. 18,475 households (23.4%) were made up of individuals and 4,146 (5.2%) had someone living alone who was 65 years of age or older. The average household size was 2.61. There were 51,453 families (65.1% of all households); the average family size was 3.13.
The age distribution of the population was as follows: 45,675 people (21.5%) under the age of 18, 30,384 people (14.3%) aged 18 to 24, 66,670 people (31.4%) aged 25 to 44, 51,185 people (24.1%) aged 45 to 64, and 18,461 people (8.7%) who were 65 years of age or older. The median age was 33.9 years. For every 100 females, there were 94.9 males. For every 100 females age 18 and over, there were 92.4 males.
There were 83,899 housing units at an average density of 1,262.5 per square mile (487.5/km²), of which 39,646 (50.2%) were owner-occupied, and 39,332 (49.8%) were occupied by renters. The homeowner vacancy rate was 2.2%; the rental vacancy rate was 6.2%. 109,846 people (51.7% of the population) lived in owner-occupied housing units and 95,973 people (45.2%) lived in rental housing units.
During 2009–2013, Irvine had a median household income of $90,585, with 12.2% of the population living below the federal poverty line.