Prince William County, Virginia Map
Location in the state of Virginia
Virginia's location in the U.S. Statistics Founded 1731 Seat Manassas Area
 - Total
 - Land
 - Water
348 sq mi (901 km²)
338 sq mi (875 km²)
11 sq mi (28 km²), 3.04% Population
 - (2007)
 - Density
383,644
831/sq mi (321/km²) Website [ ... ]