Fort Chiswell is a census-designated place (CDP) in Wythe County, Virginia, United States. As of the 2020 census, Fort Chiswell had a population of 876.
Fort Chiswell is located at the junction of Interstates 77 and 81. Going west from Fort Chiswell, drivers find themselves on a double wrong-way concurrency - one of few in the nation. Interstate 77 northbound is overlapped with Interstate 81 southbound, drivers will find themselves oriented the right way again when exiting I-81 back to I-77 north towards Charleston or south to Charlotte.
thumb|right|Sign on I-81/I-77 indicating a double wrong-way concurrency near Fort Chiswell, Virginia.
History
The community name is derived from a frontier fort built in 1758 as an outpost during the French and Indian War. The fort, which was of strategic importance during the American Revolution as the guardpost over a small deposit of lead used to mold bullets, was situated at the junction of the Great Trading Path and the Richmond Road, near the New River. The fort fell into disrepair in the 18th century as both the county seat and courthouse were moved from Fort Chiswell to the county seat of Wytheville, 12 miles to the west. The remaining foundations of the Fort and its surrounding buildings were completely covered over during the construction of I-77 in Wythe County during the 1970s. There is a pyramid shaped historical marker of sandstone situated approximately 200 yards west-northwest of the fort's original location.
The Fort Chiswell Site, The Mansion at Fort Chiswell, and McGavock Family Cemetery are listed on the National Register of Historic Places.
Schools
Fort Chiswell has a few different forms of both private and public schools, however there is only one private school in the town, which is named 'Kiddy Centre' which only allows for pre-school and daycare education. The public sector has two schools including the Fort Chiswell Middle School (FCMS) and the Fort Chiswell High school (FCHS) which have been merged into one secular school building. The current principals there are for the middle school are Tammy J. Watson and Vice Principal Chelsea R. Buchanan. Current Principals of the High School are James C. Suma and vice principal Holly L. Luper.
thumb|The Fort Chiswell Historic Marker near the site of the original fort in Wythe County, Virginia.
thumb|Ft. Chiswell plaque on the above Historic Marker.
thumb|Wilderness Road plaque on the above Historic Marker.
thumb|One of three millstones from the mill at old Ft. Chiswell which are mounted on the above Historic Marker.
Geography
Fort Chiswell is located at (36.943670, −80.940335).
According to the United States Census Bureau, the CDP has a total area of 12.1 square miles (31.3 km<sup>2</sup>), all land.
Demographics
Fort Chiswell was first listed as a census designated place in the 2000 U.S. census.