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.
The census-designated place of Blacksville and the unincorporated communities of Flippen, Kelleytown, and Ola are located near McDonough, and addresses in those communities have McDonough postal addresses.
The city hosts a Geranium Festival each springtime on the third Saturday in May, celebrating the locally grown flowers and community. The one day festival serves as a showcase of local artistry and talent through the open-air craft markets and live musical performances. The festival is sponsored by the McDonough Lions Club, and held on the McDonough Square. 2009 marks the 32nd anniversary of the festival.