Prince William County
There are 11 US Post Offices in Prince William County serving a total of 247,978 residents equating to 22,543 residents per post office. It's estimated that approximately 395,801 packages are handled across the 11 county post offices annually. Prince William County is located on the Potomac River in the Commonwealth of Virginia. As of the 2010 census, the population was 402,002, in 2014, the population was estimated to be 437,636, making it the second-most populous county in Virginia. Its county seat is the independent city of Manassas. A part of Northern Virginia, Prince William County is included in the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area. In 2012 it had the seventh highest income of any county in the United States. It was the first minority-majority county in Virginia, with Hispanic (of any race, mostly from Central and South America), African American, and Asian being the chief groups. The Bureau of Economic Analysis combines the independent cities of Manassas and Manassas Park with Prince William County (within which the two cities are enclaves) for statistical purposes:"