Grayson County/Carroll County
Historical highway marker Z-86 · Grayson County
Grayson County Formed in 1792 from Wythe, and named for William Grayson, one of the first two United States Senators from Virginia. Headwaters of New River are in this county. Carroll County Formed in 1842 from Grayson, and named for Charles Carroll of Carrollton, signer of the Declaration of Independence. New River runs through this county.