Pendergrass, GA. Sponsored Topics. Pendergrass is a city in Jackson County, Georgia, United States. The population was 431 at the time of the 2000 census. Pendergrass is located at 34°9′51″N 83°40′52″W / 34.16417°N 83.68111°W / 34.16417; -83.68111 (34.164223, -83.681047).