Arlington County

Arlington County spans 26 square miles along the Potomac River, directly opposite Washington D.C., with a population density exceeding 9,200 residents per square mile.

The territory was established in 1801 as part of the District of Columbia before its return to Virginia in 1846 through a congressional act.

The Arlington National Cemetery holds memorials and graves of military personnel, containing over 300,000 burial sites from the Civil War to present conflicts.

The county maintains an extensive public transportation network with multiple metro stations, commuter trains, buses, and developed bicycle routes throughout the area.

The Pentagon, located within Arlington County, remains the largest office building globally and serves as the Department of Defense headquarters since 1943.

Location: Virginia

Inception: February 27, 1801

Elevation above the sea: 80 m

Part of: Arlington–Alexandria–Reston metropolitan division, Washington metropolitan area

Shares border with: Washington, D.C., Alexandria, Fairfax County, Falls Church, Montgomery County, Foggy Bottom

Website: https://arlingtonva.us

GPS coordinates: 38.87693,-77.08931

Latest update: May 27, 2025 20:50