A total of almost 1,000 acres were listed for sale in Virginia's Prince William County recently; the overall value of all Prince William County land for sale was almost $327 million. Prince William County ranks 29th out of 133 counties in the Old Dominion for the combined amount of land currently advertised for sale. Of all farms, rural land, hunting land and other land for sale in Prince William County, Manassas had the most land for sale. Prince William County is the 60th largest county (347 square miles) in Virginia. It's located in the Northern Virginia region of Virginia.