Woodbridge is a census-designated place in Prince William County, Virginia, United States, located 20 miles south of Washington, D.C. Bounded by the Occoquan and Potomac rivers, Woodbridge Magisterial District had 54,275 residents at the 2010 census. The Woodbridge census-designated place comprises just one portion of the magisterial district and had a population of 4,055 in the 2010 census. The census-designated place consists solely of the section north of Occoquan Road and Dawson Beach Road, and east of Interstate 95.Woodbridge offers a variety of amenities for residents and visitors, including the Potomac Mills shopping mall and the Stonebridge at Potomac Town Centre Shopping Centers. Woodbridge is served by the Prince William County Public Schools, and the Woodbridge campus of Northern Virginia Community College borders the district. Sentara Northern Virginia Medical Center, formerly Potomac Hospital, recently expanded and now has the capacity to serve 183 patients.