There are 1 US Post Offices in Bleckley County serving a total of 13,756 residents equating to 13,756 residents per post office. It's estimated that approximately 21,956 packages are handled across the 1 county post offices annually. Bleckley County is a county located in the U.S. state of Georgia. As of the 2010 census, the population was 13,063. The county seat is Cochran.