There are 2 US Post Offices in Glascock County serving a total of 3,343 residents equating to 1,672 residents per post office. It's estimated that approximately 5,336 packages are handled across the 2 county post offices annually. Glascock County is a county located in the U.S. state of Georgia. As of the 2010 census, the population was 3,082, making it the fourth-least populous county in Georgia. The county seat is Gibson. The county was created on December 19, 1857."