It was created by the Redistribution of Seats Act 1885 as a division of the parliamentary county of Lancashire.
The constituency, officially designated as South-West Lancashire, Ince Division consisted of parishes south of, but not including, the town of Wigan, namely: The electorate also included the freeholders of the municipal borough of Wigan who were entitled to vote in the county.
[3] The Representation of the People Act 1918 reorganised constituencies throughout the United Kingdom.
Boundaries were adjusted and seats were defined in terms of the districts created by the Local Government Act 1894.
The constituency was defined as consisting of six urban districts: Abram, Ashton in Makerfield, Billinge & Winstanley, Ince-in-Makerfield, Orrell, and Skelmersdale & Holland.