McDonough is a city in Henry County, Georgia, United States. The population was 22,084 at the 2010 census. Inclusion of the unincorporated neighborhoods surrounding McDonough, which are not part of a town/city, raises the population to approximately 30,000 from an estimate in 2008. The city is the county seat of Henry County. It is the home of AM radio station Classic Country 1410 WKKP and SCB-TV cable Channel 15 television station.