Muscogee County is a county located on the central western border of the U.S. state of Georgia. As of the 2010 census, the population was 189,885. Its county seat and only city is Columbus, with which it has been a consolidated city-county since the beginning of 1971.Muscogee County is part of Columbus, GA-AL Metropolitan Statistical Area.The only other city in the county was Bibb City, which disincorporated in December 2000. Fort Benning takes up nearly one quarter of the county.