Wythe County was offcially formed from Montgomery County by the Virginia Assembly in 1790. It was named after George Wythe, the first Virginian signer of the Declaration of Independence. During the Civil War the Battle of Cove Mountain was fought in the county.
Prior to Wythe County's creation, what is now the Wythe County community of Austinville served as the county seat for Fincastle County, an extinct Virginia county whose borders stretched from Roanoke, Virginia, to the Mississippi River — a county roughly the size of half the State of Texas.
Wythe County's Austinville community was founded by Stephen and his brother Moses Austin, father of the famous Stephen F. Austin. In the 1790s the Austins took over the mines that produced lead and zinc; the town was named for the Austin surname, and not for any one particular Austin of the brothers who bore that surname. Lead was mined and shipped throughout the fledgling country; lead shot was also produced. Located near Fosters Falls, Jackson Ferry Shot Tower still stands as a testament to the citizens of Wythe County. Lead was hoisted to the top of the tower using block and tackle and oxen. The lead was melted in a retort and then poured through a sieve at the top of the tower. The droplets of molten lead would become round during the 150-foot descent. The shot would collect in a kettle of water and slave laborers would enter through a 110-foot access tunnel located near the bank of the New River to retrieve the shot from the kettle.
The lead mines closed in 1982 due to new United States Environmental Protection Agency standards and the lack of a market for lead. The mines have since filled with water; the main shaft extended in excess of 1100 feet straight down.
Another notable area within the county is the unincorporated community of Fort Chiswell — named for a French and Indian War-era fort. The fort and its surrounding buildings served as the county seat until the incorporated town of Wytheville was established approximately 10 miles to the west. The fort fell into disrepair and its ruins were covered over when the intersection of I-77 and I-81 was constructed in the 1970s. A pyramid marker now stands in the approximate location of the former fort. The community was named for Colonel John Chiswell who helped establish the lead mines (1757) prior to the Austins purchase.