Scottsdale, Arizona is 11 times larger than West Covina, California.
Area: 478 km2 calculated
Scottsdale is a city in the eastern part of Maricopa County, Arizona, adjacent to the Greater Phoenix Area. According to the U.S. Census Bureau, as of 2010 the population of the city was 217,385. 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