Lexington is an independent city in the Commonwealth of Virginia, United States. At the 2020 census, the population was 7,320. It is the county seat of Rockbridge County, although the two are separate jurisdictions, and is combined with it for statistical purposes by the Bureau of Economic Analysis. Lexington is within the Shenandoah Valley about 57 miles (92 km) east of the West Virginia border and is about 50 miles (80 km) north of Roanoke, Virginia. First settled in 1778, Lexington is best known as the home of the Virginia Military Institute and Washington and Lee University.