Irvine is a city located in the California region of the United States. During the most recent census, Irvine had a population of 212,375. Irvine is the 16th most poplulated city in the California region, the 102nd most populated city in the United States and the 1,738th most populated city in the world. Irvine is in the America/Los Angeles timezone which is 7 hours behind UTC. Irvine adjusts the hour with daylight savings time during the winter months.