Forest Park is a city in Clayton County, Georgia, United States. It is located approximately nine miles (14 km) south of Atlanta and is part of the Atlanta–Sandy Springs–Marietta Metropolitan Statistical Area. As of the 2020 census, the city had a population of 19,932.

State Route 3 (SR 3) is a 351-mile-long (565 km) state highway that travels south-to-north through portions of the western part of the U.S. state of Georgia, roughly paralleling Interstate 75 (I-75). The highway travels from its southern terminus at the Florida state line, where SR 3 and SR 300 both reach their southern terminus, concurrent with US 19. Here, US 19 travels concurrent with State Road 57, 12 miles (19 km) south-southeast of Thomasville. SR 3 travels through portions of Thomas, Mitchell, Dougherty, Lee, Sumter, Schley, Taylor, Upson, Pike, Spalding, Henry, Clayton, Fulton, Cobb, Bartow, Gordon, Whitfield, and Catoosa counties to its northern terminus at the Tennessee state line, in East Ridge, where US 41/US 76 continue, concurrent with State Route 8. It travels through Thomasville, Albany, Griffin, Atlanta, Calhoun, and Dalton.