Prince William County's borders encompass 360 square miles of Northern Virginia. It is a destination for families and businesses looking to locate near Washington, DC without the high cost of real estate and taxes. We are located south and west of Washington, DC and are bordered on the east by the Potomac River.
Within Prince William's boundaries are the independent cities of Manassas and Manassas Park. Federal land accounts for approximately 18% (41,600 acres) of the total area and includes: Quantico Marine Corps Base, Manassas National Battlefield Park, Prince William Forest Park, Occoquan Bay National Wildlife Refuge and Featherstone National Wildlife Refuge.