There are 2 US Post Offices in Macon County serving a total of 18,803 residents equating to 9,402 residents per post office. It's estimated that approximately 30,012 packages are handled across the 2 county post offices annually. Macon County is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 22,248. Its county seat is Lafayette. Macon County is part of the Nashville-Davidson\u2013Mufreesboro\u2013Franklin, TN Metropolitan Statistical Area."