Louth was a rural district in Lincolnshire, Parts of Lindsey from 1894 to 1974. It was created in 1894 from Louth rural sanitary district. It did not include Louth, which was a separate municipal borough entirely surrounded by the rural district. Its boundaries changed little, losing Trusthorpe to the Mablethorpe and Sutton urban district in 1925 and ceding suburbs to Louth.