Salford is comprised of areas of the former local authorities of the City (or County Borough) of Salford, Swinton and Pendlebury Borough, Irlam Urban District and Worsley Urban District. In 1974 these former authorities were merged into a single entity, Salford City Council.
The area of the present city of Salford was within Salford Hundred, one of the ancient divisions of the county of Lancashire as it was before 1974. The Lancashire county archives are in the custody of the County Archivist at Lancashire County Council and the office has also received a large number of other records relating to the area of the present city.
Salford has a close association with Manchester, and the Manchester Archives at that city's central library has acquired manuscript and published materials on Manchester and the adjoining areas.