Jacksonville, Florida is 20 times larger than Stamford, Connecticut.
Area: 1,988 km2 calculated
Population: 836,507 (2012)
Jacksonville is the largest city in the U.S. state of Florida by population and the largest city by area in the contiguous United States. It is the county seat of Duval County, with which the city government consolidated in 1968. Wikipedia
Area: 100 km2 calculated
Population: 125,109 (2012)
Stamford is a city in Fairfield County, Connecticut, United States. According to the 2010 census, the population of the city is 122,643. Wikipedia