Clarksville, Tennessee is 2.4 times larger than Stamford, Connecticut.
Area: 236 km2 calculated
Clarksville is a city in and the county seat of Montgomery County, Tennessee, and the fifth-largest city in the state behind Memphis, Nashville, Knoxville, and Chattanooga, respectively. The city had a population of 132,957 at the 2010 census, and an estimated population of 142,519 in 2012. Wikipedia
Area: 100 km2 calculated
Stamford is a city in Fairfield County, Connecticut, United States. According to the 2010 census, the population of the city is 122,643. Wikipedia