Prince William County is located on the Potomac River in the Commonwealth of Virginia and has a population estimated to be 437,636 people, making it the second-most populous county in Virginia. It’s located about 35 miles southwest of D.C. and offers some of the areas most affordable housing. Many residents here are commuters, so communities with ease of access to travelled routes are highly sought after. However, you can find homes that range from waterfront bungalows, amenity filled townhome communities, to custom built million dollar homes. Prince William County is an area where choice reigns supreme. The most popular areas tend to be Woodbridge, Dumfries, and Triangle. The Marine Corps Base Quantico is located in Prince William County, employing a large number of area residents, and rotating in vast numbers of military personnel to the area.