Worcester, Massachusetts is 2.4 times larger than West Covina, California.
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
Area: 100 km2 calculated
Worcester is a city and the county seat of Worcester County, Massachusetts, United States. Named after Worcester, England, as of the 2010 Census the city's population was 181,045, making it the second largest city in New England after Boston. Wikipedia