The Columbus, Ohio metropolitan area is a metropolitan area in Central Ohio surrounding the state capital of Columbus. As defined by the U.S. Census Bureau, it includes the counties of Delaware, Fairfield, Franklin, Hocking, Licking, Madison, Morrow, Perry, Pickaway, and Union. At the 2020 census, the MSA had a population of 2,138,926, making it 32nd-most populous in the United States and the second largest in Ohio, behind the Cincinnati metropolitan area. The metro area, also known as Central Ohio or Greater Columbus, is one of the largest and fastest-growing metropolitan areas in the Midwestern United States.

Columbus is the capital and most populous city of the U.S. state of Ohio. With a 2020 census population of 905,748, it is the 14th-most populous city in the U.S., the second-most populous city in the Midwest after Chicago, and the third-most populous U.S. state capital after Phoenix, Arizona and Austin, Texas. Columbus is the seat of government of Franklin County; it also extends into Delaware and Fairfield counties. It is the core city of the Columbus metropolitan area, which encompasses ten counties in central Ohio. It had a population of 2,138,926 in 2020, making it the largest metropolitan area entirely in Ohio and 32nd-largest metro area in the U.S.