There are 8 US Post Offices in Hardeman County serving a total of 27,145 residents equating to 3,393 residents per post office. It's estimated that approximately 43,326 packages are handled across the 8 county post offices annually. Hardeman County is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 27,253. Its county seat is Bolivar.