There are 5 US Post Offices in Warren County serving a total of 5,415 residents equating to 1,083 residents per post office. It's estimated that approximately 8,643 packages are handled across the 5 county post offices annually. Warren County is a county located in the U.S. state of Georgia. As of the 2010 census, the population was 5,834. The county seat is Warrenton. The county was created on December 19, 1793 and is named after General Joseph Warren, who was killed in the Battle of Bunker Hill."