 Darcy Lever was a township or civil parish in the ecclesiastical parish of Bolton le Moors in the Salford hundred in the historic county of Lancashire and in 1837 became part of the Bolton Poor Law Union.In 1898 Darcy Lever was incorporated into the County Borough of Bolton following the Bolton, Turton, and Westhoughton Extension Act of 1898.The census of 1821 showed Darcy Lever had a population of 956, by 1871 this had grown to 2,071 people living in 404 houses.