 Barbour County is situated on the Allegheny Plateau at the western edge of the Allegheny Mountains (represented by Laurel Mountain at the County's eastern boundary).Most of the County is drained by the Tygart Valley River which traverses it from south to north and on which its three largest settlements – Philippi, Belington, and Junior – are sited.Tributaries of the Tygart in the County include Teter Creek, Laurel Creek, Hacker's Creek, the Buckhannon River and the West Fork River.