Forest Park is a city located in Clayton County, Georgia, United States. It is part of the Atlanta metropolitan area and is approximately 9 miles south of downtown Atlanta. The city covers an area of about 10 square miles and has a population of around 19,000 people. Forest Park is known for its close proximity to Hartsfield-Jackson Atlanta International Airport, the world's busiest airport. It also offers various recreational opportunities with its parks, trails, and recreational facilities.