Jasper is a city in Pickens County, Georgia, United States. The population was 4,084 in 2020. The city is the county seat of Pickens County. Jas…Jasper is a city in Pickens County, Georgia, United States. The population was 4,084 in 2020. The city is the county seat of Pickens County. Jasper was founded in 1853 as seat of the newly formed Pickens County. It was incorporated in 1857 as a town and in 1957 as a city. The community is named for William Jasper, a hero of the American Revolutionary War. Jasper is situated at an elevation of 1,463 feet.