In 1932 the districts of Winsen and Harburg were merged; the City of Harburg-Wilhelmsburg (which had been merged in 1927) became the capital of the district, although it remained district-free and hence was not a part of the district.
1932. aastal Winseni ja Harburgi kreisid ühendati; Harburg-Wilhelmsburgi linn (mis oli liidetud 1927. aastal) sai kreisi keskuseks, kuigi see jäi kreisivabaks ja seega ei olnud kreisi osa.