Delbarton is a town in Mingo County, West Virginia, USA. The population was 579 at the 2010 census. Delbarton was incorporated September 6, 1946 by the Mingo County Circuit Court. The name Delbarton comes from the New Jersey country estate of one of the officials of the United Thacker Land Company on which a school is located with the same name, Delbarton School. The town is located in the heart of the richest coal area of the state.