Greenland is 13,014 times larger than Rockford, Illinois.
Area: 2,166,086 km2 World Factbook
Population: 57,728 (July 2014) World Factbook
Greenland is an autonomous country within the Kingdom of Denmark, located between the Arctic and Atlantic Oceans, east of the Canadian Arctic Archipelago. Wikipedia
Area: 166 km2 calculated
Rockford is the third largest city in the U.S. state of Illinois, the 160th most populous city in the United States, and the 112th most populous region in the United States. It is the county seat of Winnebago County and is located on both banks of the Rock River in far northern Illinois. Wikipedia