There are 4 US Post Offices in Richmond County serving a total of 9,419 residents equating to 2,355 residents per post office. It's estimated that approximately 15,034 packages are handled across the 4 county post offices annually. Richmond County is a county located on the Northern Neck in the Commonwealth of Virginia. As of the 2010 census, the population was 9,254. Its county seat is Warsaw. The rural county should not be confused with the large city and state capital Richmond, Virginia. It was formed in 1692 when the first Rappahannock County was divided to form Richmond County and Essex County."