Marshall is a census-designated place (CDP) in northwestern Fauquier County, Virginia. The population as of the 2010 Census was 1,480. Marshall was originally known as Salem. It became Marshall after a short-livedincorporation. Marshall is named after John Marshall, the former United States Supreme Court Chief Justicewho grew up at Oak Hill in nearby Delaplane.Marshall is home to the Fauquier Heritage and Preservation Foundation, as well as the Number 18 School in Marshall, which was the last one-room school in Fauquier County. Originally a whites-only schoolhouse, it was a blacks-only schoolhouse until it closed in the 1960s as a result of desegregation. It has been restored and school groups often visit.