Arlington County is a county in the Commonwealth of Virginia, often referred to simply as Arlington or Arlington, Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. Wikipedia
Area: 67.34 km²
Population: 236,842 (2019)
Congressional district: 8th
Colleges and Universities: Marymount University, MORE
Rivers: Four Mile Run, Windy Run, Spout Run, Pimmit Run, MORE
Sales tax: 4.3%.