Kings County, California is 20 times larger than Brooklyn (NYC borough).
Area: 180 km2 calculated
Population: 2,565,635 (2012)
Brooklyn is the most populous of New York City's five boroughs, with about 2.6 million people, as well as the second-largest in area. Wikipedia
Area: 3,605 km2 calculated
Population: 151,364 (2012)
Kings County is a county located in the U.S. state of California. It is located in the San Joaquin Valley, a rich agricultural region. The county seat is Hanford. Wikipedia