Columbia, South Carolina
Columbia is the capital and second largest city of the U.S. state of South Carolina, with a population estimate of 134,309 as of 2016. The city serves as the county seat of Richland County, and a portion of the city extends into neighboring Lexington County. It is the center of the Columbia metropolitan statistical area, which had a population of 767,598 as of the 2010 United States Census, growing to 817,488 by July 1, 2016, according to 2015 U.S. Census estimates. The name "Columbia" is a poetic term used for the United States, originating from the name of Christopher Columbus.
District of Columbia statistical areas
Most recently on December 1, 2009, the Office of Management and Budget defined 1067 statistical areas for the United States, including a combined statistical area and a metropolitan statistical area in the District of Columbia. The district has no counties or other legal subdivisions. The table below shows the recent population of these statistical areas.