Clarke County is a county in the Commonwealth of Virginia. As of the 2010 census, the population was 14,034. Its county seat is Berryville. Clarke County is included in the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area.HistoryThe first settlement of the Virginia Colony in the future Clarke County was in 1736 by Thomas Fairfax, 6th Lord Fairfax of Cameron who built a home, Greenway Court, on part of his 5 million acre (20,000 km²) property, near what is now the village of White Post. White Post was named for the large signpost pointing the way to Lord Fairfax's home.As it lay just west of the Blue Ridge border demarcated under Governor Spotswood at Albany in 1722, the area was claimed along with the rest of the Shenandoah Valley by the Six Nations Iroquois (who had overrun it during the later Beaver Wars in around 1672), until the Treaty of Lancaster in 1744, when it was purchased from them by Governor Gooch.Many of the early settlers of what became Clarke County were children of Tidewater planters, who settled on large land grants from Lord Fairfax. Two-thirds of the county was settled by the plantation group, and the plantation lifestyle thrived until the Civil War. County status came in 1836 when it was divided off from Frederick County. Clarke was known for its large crops of wheat.