The final Leeds County Borough municipal elections were held on 5 May 1972, with a third of the councillors up for re-election. The wide-reaching reforms set out in the Local Government Act 1972 had scheduled the council's abolition to coincide with its replacement by the enlarged successor Leeds metropolitan district on 1 April 1974. Prior to the election, a by-election had resulted in Labour gaining the seat in Castleton from the Liberals. The sixteen gains for Labour were enough to re-take control of the council from the Conservatives for its last years of existence.