 Although the administrative centre of the District of Mettmann changed often over the years, in 1954 the parliament of the Land North Rhine-Westphalia eventually decided to make Mettmann the district's administrative centre.In 1974–75, with the administrative boundary reform, the district lost several councils to the neighbouring cities Düsseldorf, Duisburg, Essen, and Wuppertal.The district name also changed from Düsseldorf-Mettmann to Mettmann during this reform.