There are 14 US Post Offices in Mathews County serving a total of 8,819 residents equating to 630 residents per post office. It's estimated that approximately 14,076 packages are handled across the 14 county post offices annually. Mathews County is a county located in the U.S. state of Virginia. As of the 2010 census, the population was 8,978. Its county seat is Mathews. Located on the Middle Peninsula, Mathews County is included in the Virginia Beach-Norfolk-Newport News, VA-NC Metropolitan Statistical Area."