Sylvania is a city in and the county seat of Screven County, Georgia, United States. The population was 2,634 in 2020. The area was inha…Sylvania is a city in and the county seat of Screven County, Georgia, United States. The population was 2,634 in 2020. The area was inhabited for thousands of years by various cultures of indigenous peoples. By the time of European encounter, it was occupied by the Yuchi peoples, but some Creeks, the Uchee's allies, moved into the area during Colonial times.