Columbia, South Carolina is 1,166 times larger than Mobile, Alabama.
Area: 0 km2 calculated
Mobile is the county seat of Mobile County, Alabama. The population within the city limits was 195,111 as of the 2010 United States Census, making it the third most populous city in the U.S. 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