After the 1990 census, his district was merged with the 3rd district, represented by a longtime friend, Marty Russo.

In 1922 the independent districts of Aeschach, Hoyren and Reutin merged with the district.

In 1968, the district was dissolved, and its territory was merged with the administrative district of Darmstadt.

In 1940, the branch location of the administration was dissolved and also administratively merged with the district of Kusel.

In 1972, this district was merged with the administrative district of Höchstadt.

In 1972 parts of the previous district Gerolzhofen (including the town Gerolzhofen) was merged with the district.

The former Indian state of Sawantwadi was merged with the district and the taluka boundaries were reorganized in the year 1949.

In 1932 it was merged with the district of Meisenheim.

In 1932 it was merged with the district of Waldbröl, and then for the first time called Oberbergischer Kreis.

On September 26, 2011, the town of Fujisawa merged with the city of Ichinoseki and the district dissolved.