Irvine, CA has a population of 246,992 and is the 81st largest city in the United States. The population density is 3,766 per sq mi which is 1521% higher than the California average and 4057% higher than the national average. The median age in Irvine is 35 which is approximately 4% lower than the California average of 36. In Irvine, 56% of the population over 15 years of age are married, 52% speak English and 6% speak Spanish. 41% of Irvine residents were born in California, 18% were born out of state, 1% were born outside of the United States and 39% were foreign born.