Marienwerder (district)

The territory east of the river was first administered by the governor of the Region of Königsberg.In a plebiscite on 11 July 1920, the inhabitants of the district voted to remain in the Free State of Prussia within Weimar Germany.

Außendeich, Johannisdorf, Kleinfelde, Kramershof, and Neu Liebenau, communities east of the Vistula, became part of Poland on 12 August, however.

On 1 July 1922, Kreis Marienwerder was formally incorporated into the Prussian Province of East Prussia.

The previously Polish communities of Burztych (Außendeich), Janowo (Johannisdorf), Kramrowo (Kramersdorf), Male Polko (Kleinfelde), and Nowe Lignowy (Neuliebenau) were included within Landkreis Dirschau after their conquest at the beginning of the war.

As a result of the post-war Potsdam Conference, the district was placed under Polish administration and the German inhabitants were subsequently expelled westward.