There are 15 US Post Offices in Hampshire County serving a total of 24,502 residents equating to 1,633 residents per post office. It's estimated that approximately 39,108 packages are handled across the 15 county post offices annually. Hampshire County is a county located in the U.S. state of West Virginia. As of the 2010 census, the population was 23,964. Its county seat is Romney, West Virginia's oldest town (1762). The county was created by the Virginia General Assembly in 1754, from parts of Frederick and Augusta Counties (Virginia) and is the oldest county in the state of West Virginia. The county lies in both West Virginia's Eastern Panhandle and Potomac Highlands regions. Hampshire County is part of the Winchester, VA-WV Metropolitan Statistical Area."