There are 6 US Post Offices in Scott County serving a total of 20,807 residents equating to 3,468 residents per post office. It's estimated that approximately 33,210 packages are handled across the 6 county post offices annually. Scott County is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 22,228. Its county seat is Huntsville. Scott County is known for having seceded from the Confederacy during the Civil War and subsequently forming The Free and Independent State of Scott.