Columbia, South Carolina is 0.59% larger than Atlanta.
Area: 346 km2 calculated
Atlanta is the capital of and the most populous city in the U.S. state of Georgia, with an estimated 2013 population of 447,841. Atlanta is the cultural and economic center of the Atlanta metropolitan area, home to 5,522,942 people and the ninth largest metropolitan area in the United States. Wikipedia
Area: 348 km2 calculated
Columbia is the state capital and largest city in the State of South Carolina. The population was 129,272 according to the 2010 census. The 2013 United States Census estimates put the city at 133,358. Wikipedia