New York (USA) is 49 times larger than Cook County, Illinois.
Area: 122,057 km2 US Census
Population: 19,651,127 (July 2013) US Census
New York is a state in the Northeastern and Mid-Atlantic regions of the United States. New York is the 27th-most extensive, the third-most populous, and the seventh-most densely populated of the 50 United States. Wikipedia
Area: 2,468 km2 calculated
Population: 5,231,351 (2012)
Cook County is a county in the United States state of Illinois. As of the 2010 census, the population was 5,194,675. Wikipedia