Clarke County is located in the northeastern part of the U.S. state of Georgia. As of the 2020 census, the population was 128,671. Its county seat is Athens, with which it is a consolidated city-county. Clarke County is included in the Athens-Clarke County, GA Metropolitan Statistical Area, which is also included in the Atlanta-Athens-Clarke County-Sandy Sp…Clarke County is located in the northeastern part of the U.S. state of Georgia. As of the 2020 census, the population was 128,671. Its county seat is Athens, with which it is a consolidated city-county. Clarke County is included in the Athens-Clarke County, GA Metropolitan Statistical Area, which is also included in the Atlanta-Athens-Clarke County-Sandy Springs, GA Combined Statistical Area.