During the Napoleonic Wars, the Bromberg district was ceded by Prussia to the Duchy of Warsaw through the Treaty of Tilsit in 1807.
On 27 December 1918 the Greater Poland uprising began in the province of Posen, but the district of Bromberg remained under German control.
On 16 February 1919 an armistice ended the Polish-German fighting, and on 28 June 1919 the German government had to cede the district of Bromberg and the predominantly German-populated city of Bromberg to Poland as part of the provisions of the Treaty of Versailles.
On 25 November 1919 Germany and Poland concluded an agreement on the evacuation of state facilities and the transfer of the areas to be ceded, which was ratified on 10 January 1920.
At the beginning of World War II, there were clashes between the German minority and Polish armed forces in the area, and several hundred people were killed on Bloody Sunday.
After the invasion of the Wehrmacht, members of the German minority formed paramilitary units, called the Volksdeutscher Selbstschutz, led by the SS and Gestapo, and committed mass murder of the Polish population.
At the end of World War II, numerous German residents fled west.
The data in the tables below was extracted from the 1905 Prussian gazetteer Gemeindelexikon für das Königreich Preußen.
Kreis Bromberg was part of: The data in the tables below was extracted from the 1905 Prussian gazetteer Gemeindelexikon für das Königreich Preußen.