As well as the town of Bilston, which had been heavily industrialised town since the 19th century, it also incorporated the nearby communities of Sedgley and Coseley, both of which were still predominantly rural villages when the parliamentary seat was created in 1918, but by the time the constituency changed from Wolverhampton Bilston to Bilston 32 years later they were rapidly expanding into towns, and had expanded further still when the constituency was finally abolished in 1974.
1950–1974: By 1950 Bilston was a Municipal Borough. Coseley and Sedgley were still Urban Districts in the constituency. In 1966 most of Sedgley was incorporated into an expanded borough of Dudley, which also took in the south of Coseley, while the remainder of Sedgley was transferred to Wolverhampton and Seisdon and sections of Coseley were transferred to Wolverhampton and West Bromwich.