McDonough is a city in Henry County, Georgia, United States. It is part of the Atlanta metropolitan area. Its population was 22,084 at the 2010 census, up from 8,493 in 2000. The city is the county seat of Henry County. The unincorporated communities of Blacksville, Flippen, Kelleytown, and Ola are located near McDonough, and addresses in those communities have McDonough ZIP Codes. History The town was named for naval officer Commodore Thomas Macdonough and founded in 1823 around a traditional town square design. The buildings surrounding the square are intact, although there are some vacancies. The county courthouse and historic jail building are on the north side near the Welcome Center in a historically maintained Standard Oil service station, built in 1920. The station also houses the Main Street Program Office and Hospitality and Tourism Office. One block east of the square, the town's original cotton warehouse has been replaced with the Henry County Judicial Center. In the same area the Henry County Courthouse Annex has an original oil on canvas "Cotton Gin" ( by 11 feet) by artist Jean Charlot. He painted this oil in 1942 for the town post office. His works can be found all over the world in everything from children's books to large murals. The town was a relay station on the New York City to New Orleans stagecoach line and was connected by other stage lines with Fayetteville and Decatur, and with Macon by way of Jackson. Geography McDonough is in central Henry County, southeast of downtown Atlanta. U.S. Route 23 passes through the center of the city, leading northwest to Stockbridge and south to Locust Grove. Interstate 75 passes through the southwestern arm of the city, with access from Exits 216, 218, and 221. I-75 leads northwest to Atlanta and southeast to Macon. According to the United States Census Bureau, the city has a total area of , of which are land and , or 1.50%, are water. Demographics 2000 census At the 2000 census, there were 8,493 people, 3,069 households and 2,102 families living in the city. The population density was . There were 3,234 housing units at an average density of . The racial makeup of the city was 61.4% white, 34.3% African American, 0.2% Native American, 1.4% Asian, 1.8% from other races, and 1% from two or more races. Hispanic or Latino of any race were 3.7% of the population.