Augusta County is a county located in the Shenandoah Valley on the western edge of the U.S. commonwealth of Virginia. It is the second-largest county in Virginia by total area, and it surrounds the independent cities of Staunton and Waynesboro. The county seat of Augusta is Staunton, although most of the administrative services have offices in neighboring Verona. As of the 2010 census, the county population was 73,750, which represented an increase of more than 34 percent over the 1990 figure. In addition, Augusta County is part of the Staunton–Waynesboro, VA Metropolitan Statistical Area.