Arlington County, Virginia area. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from Washington, D.C., of which it was once a part. With a land area of , Arlington is the geographically smallest self-governing county in the U.S., and by reason of state law regarding population density, has no incorporated towns within its borders. Due to the county's proximity to downtown Washington, D.C., Arlington is home to many important installations for the capital region and U.S. government, including the Pentagon, Reagan National Airport, and Arlington National Cemetery. Many schools and universities have campuses in
Arlington County, Virginia, street-naming system Arlington County, Virginia, street-naming system This article details the street-naming system of Arlington County, Virginia in the United States. Although the streets of Arlington County are not laid out on a grid plan, its local streets follow sequential numbered or alphabetic patterns that are both rational and provide address numbering information. A numbered and alphabetical street-naming scheme suggests that Arlington is or once was laid out on a continuous rectilinear grid plan, which in many parts of the County it is not (although very few parts of the County are laid out using the cul-de-sac type development which is more