There are 13 US Post Offices in Mason County serving a total of 26,605 residents equating to 2,047 residents per post office. It's estimated that approximately 42,465 packages are handled across the 13 county post offices annually. Mason County is a county located in the U.S. state of West Virginia. As of the 2010 census, the population was 27,324. Its county seat is Point Pleasant. The county was founded in 1804 and was named for George Mason, delegate to the U.S. Constitutional Convention. Before the Civil War, the county was located in the State of Virginia. Mason County is part of the Point Pleasant, WV-OH Micropolitan Statistical Area."