A total of 3,000 acres were listed for sale in Frederick County, Virginia, recently, representing a total value of around $145 million in Frederick County farms, hunting land and other rural land and acreage for sale. Frederick County ranks 11th in the Old Dominion for the total number of acres of land currently advertised for sale. Winchester had the most land for sale. Frederick County is Virginia's 46th largest county (415 square miles). It's located in the Valley Virginia region of the state.