Chattahoochee County, also known as Cusseta-Chattahoochee County, is a county located on the western border in central Georgia. As of the 2020 census, the population was 9,565. The county seat is Cusseta, with which the county shares a consolidated city-county government. The city of Cusseta remains a geographically distinct municipality within Chattahoochee County. The county was created on February 13, 1854.

Columbus is a consolidated city-county located on the west-central border of the U.S. state of Georgia. Columbus lies on the Chattahoochee River directly across from Phenix City, Alabama. It is the county seat of Muscogee County, with which it officially merged in 1970; the original merger excluded Bibb City, which joined in 2000 after dissolving its own city charter.