1885-1918: The Municipal Borough of Chepping Wycombe, the Sessional Divisions of Burnham and Stoke, and parts of the first and second Sessional Divisions of Desborough.
1918-1945: The Municipal Borough of Chepping Wycombe, the Urban Districts of Eton, Marlow, and Slough, the Rural Districts of Eton and Hambleden, and part of the Rural District of Wycombe.