Lincoln County is a county located in the east central portion of the U.S. state of Georgia. As of the 2020 census, the population was 7,690. The county seat is Lincolnton. The county was created on February 20, 1796.

The Augusta metropolitan area, officially the Augusta-Richmond County metropolitan statistical area according to the U.S. Office of Management and Budget, Census Bureau and other agencies, is a metropolitan statistical area centered on the city of Augusta, Georgia. It straddles two U.S. states, Georgia and South Carolina, and includes the Georgia counties of Richmond, Burke, Columbia, Lincoln, and McDuffie as well as the South Carolina counties of Aiken and Edgefield. The official 2023 U.S. census estimate for the area was 629,429 residents, up from 611,000 at the 2020 U.S. census.