Stamford, Connecticut is 2.6 times larger than Jersey City, New Jersey.
Area: 38 km2 calculated
Population: 254,441 (2012)
Jersey City is the seat of Hudson County, New Jersey. As of the 2010 United States Census, the population of Jersey City was 247,597, making it the second-most populous city in New Jersey, after Newark. 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