Seven Mile Ford is a census-designated place (CDP) in Smyth County, Virginia, United States. The population as of the 2010 Census was 783. It obtained its current name as a result of being a river crossing seven miles from the Royal Oak Fort in Marion, Virginia. U.S. Hwy 11 passes through the center of the community, which is approximately 4 miles (6.4 km) from Chilhowie.