There are 3 US Post Offices in Hart County serving a total of 22,862 residents equating to 7,621 residents per post office. It's estimated that approximately 36,490 packages are handled across the 3 county post offices annually. Hart County is a county located in the U.S. state of Georgia. As of the 2010 census, the population was 25,213. The county seat is Hartwell. Hart County was created December 7, 1853 and named for Nancy Hart. Of Georgia's 159 counties, Hart County is the only one named after a woman. Lake Hartwell is also named for her. Letters to Miss Celie in the movie The Color Purple (film) by Steven Spielberg, based on the novel The Color Purple by Alice Walker, are addressed to \"Hartwell County, Georgia\" suggesting that the movie is set either in Hartwell or Hart County."