There are 3 US Post Offices in Roane County serving a total of 46,759 residents equating to 15,586 residents per post office. It's estimated that approximately 74,633 packages are handled across the 3 county post offices annually. Roane County is a county of the U.S. state of Tennessee. As of the 2010 census, the population was 54,181. Its county seat is Kingston. Roane County is included in the Knoxville, TN Metropolitan Statistical Area."