College Park is situated primarily in southern Fulton County, with a small portion extending into Clayton County. It is bordered by the city of Atlanta to the north, East Point to the northeast, Hapeville to the east, and Riverdale to the south.
The city's physical geography is typical of the Piedmont region of the southeastern United States, featuring gently rolling hills, lush urban forest canopies, and scattered creeks. The most prominent physical footprint in the city belongs to Hartsfield-Jackson Atlanta International Airport, whose runways and concourses define much of College Park's eastern and southern geography.