California (USA) is 164 times larger than Dongguan (China).
Area: 403,466 km2 US Census
Population: 38,332,521 (July 2013) US Census
California is a state located on the West Coast of the United States. It is the most populous U.S. state, home to one out of eight Americans, and is the third largest state by area. Wikipedia
Area: 2,456 km2 calculated
Population: 6,445,777 (2000)
Dongguan is a prefecture-level city in central Guangdong province, People's Republic of China. Wikipedia