Irvine, California is 4.1 times larger than West Covina, California.
Area: 173 km2 calculated
Irvine is a suburban city in Orange County, California, United States. It is a planned city, mainly developed by the Irvine Company since the 1960s. Wikipedia
Area: 42 km2 calculated
West Covina is a city in Los Angeles County, California, located 19 miles east of Downtown Los Angeles in the eastern San Gabriel Valley and is part of Greater Los Angeles. The population for the city was 106,098 at the 2010 census. Wikipedia