Newtownstewart is a village and townland of 540 acres (219 ha) in County Tyrone, Northern Ireland. It is overlooked by hills called Bessy Bell and Mary Gray and lies on the River Strule below the confluence with its tributary the Owenkillew. It is situated in the historic barony of Strabane Lower and the civil parish of Ardstraw. In the 2011 Census it had a population of 1,551 people. It lies within the Derry City and Strabane District Council area.