Arlington County, Virginia, covers 25.8 square miles and is located across the Potomac River from Washington D.C. Arlington had approximately 211,000 residents in 2012. The county is mainly developed with little vacant land and no farms remaining.
Virginia is in the Mid-Atlantic and Southeastern regions of the U.S., situated between the Atlantic Coast and the Appalachian Mountains. There are more than 8.65 million people, with over one-third living in the Baltimore-Washington metro area. Richmond is the capital city, yet Virginia Beach is the most populous. It spans 42,774.2 square miles, including about 3,180 square miles of water.