The Columbus–Auburn–Opelika, GA–AL Combined Statistical Area is a trading and marketing area made up of six counties in Georgia and two in Alabama. The statistical area includes two metropolitan areas: the Columbus metropolitan area and the Auburn–Opelika metropolitan area. As of the 2020 Census, the CSA had a population of 483,104. The Combined Statistical Area consists of the: * Columbus metropolitan area, population 319,643. * Auburn–Opelika metropolitan area, population 163,461.