Kansas City, Kansas is 7.1 times larger than Hartford, Connecticut.
Area: 47 km2 calculated
Hartford is the capital of the U.S. state of Connecticut and the historic seat of Hartford County until Connecticut disbanded county government in 1960. Wikipedia
Area: 332 km2 calculated
Kansas City is the third-largest city in the state of Kansas, the county seat of Wyandotte County, and the third-largest city of the Kansas City metropolitan area. It is part of a consolidated city-county government known as the "Unified Government". Wikipedia