There are 6 US Post Offices in Fayette County serving a total of 16,442 residents equating to 2,740 residents per post office. It's estimated that approximately 26,243 packages are handled across the 6 county post offices annually. Fayette County is a county of the U.S. state of Alabama. As of the 2010 census, the population was 17,241. Its county seat is Fayette. Its name is in honor of the Marquis de Lafayette (or de la Fayette), who aided General George Washington in the American Revolutionary War."