where is piney flats tn
Piney Flats, Tennessee. Piney Flats is an unincorporated community in Sullivan County in the U.S. state of Tennessee. It is part of the KingsportâBristol (TN)âBristol (VA) Metropolitan Statistical Area, which is a component of the Johnson CityâKingsportâBristol, TN-VA Combined Statistical Area â commonly known as the Tri-Cities region.