Hart County was created in 1853 from portions of Elbert and Franklin counties and named for Nancy Hart, the Revolutionary War figure, the only Georgia county named for a woman. The seat, Hartwell, incorporated in 1856, carries the same name. The county sits on the South Carolina line, with the Savannah River and Lake Hartwell forming its eastern edge.
Lake Hartwell is the county's defining feature: a U.S. Army Corps of Engineers reservoir impounded by Hartwell Dam and finished in 1962, covering roughly 56,000 acres with about 962 miles of shoreline. The lake drives the county's recreation economy, its seasonal visitors and much of its premium property, while the inland ground stays in farmland, foothills and small-town neighborhoods.
On the county's western side, the town of Royston crosses the Franklin, Hart and Madison lines. Royston's brief lives under the Franklin County hub, and for any property there the county is verified from the address itself before any success story is published.