Harpers Ferry is a historic town in Jefferson County, West Virginia, United States. It was formerly Harper's Ferry with an apostrophe and that form continues to appear in some references. It is situated at the confluence of the Potomac and Shenandoah rivers where the U.S. states of Maryland, Virginia and West Virginia meet. It is the easternmost town in West Virginia. The original, lower section of the town is located on a low-lying flood plain created by the two rivers and surrounded by higher ground. Historically, Harpers Ferry is best known for John Brown's raid on the Armory in 1859 and its role in the American Civil War. The population was 286 at the 2010 census.