Greensboro, North Carolina is 46% larger than Savannah, Georgia.
Area: 326 km2 calculated
Greensboro is a city in the U.S. state of North Carolina. It is the third-largest city by population in North Carolina and the largest city in Guilford County and the surrounding Piedmont Triad metropolitan region. According to the 2012 U.S. Census Estimate, Greensboro's population is 277,080. Wikipedia
Area: 223 km2 calculated
Savannah is the oldest city in the U.S. state of Georgia and the county seat of Chatham County. Established in 1733, the city of Savannah became the British colonial capital of the Province of Georgia and later the first state capital of Georgia. Wikipedia