Map of German Territorial Losses 1919-1945

Map created by AeroidThe map above shows just how much of Germany was lost between then end of the Second Reich in 1919 and the end of the Third Reich in 1945. It also shows the divisions of both Berlin and East and West Germany.

In 1910, Germany was 540,857.54 km2 (208,826.26 sq mi) and had a population of 64,925,993.

In 2024, after Reunification it, has an area of 357,569 km2 (138,058 sq mi) (34% smaller than 1910), but a population of 82,719,540 (27% larger).

Here are the areas lost:

Territories lost according to the Treaty of Versailles, 1919

• Alsace-Lorraine (to France)
• Eupen-Malmedy (to Belgium)
• Hlučín Region (1920 to Czechoslovakia)
• North Schleswig (to Denmark)
• Posen (to Poland)
• Upper Silesia (1922 to Poland)
• West Prussia(to Poland)
• Memel (1923 to Lithuania)

Free City of Danzig, 1920–1939

• Danzig (now Gdańsk, Poland)

Territories lost to Poland, 1945

• East Prussia (part)
• Pomerania
• Silesia

Territories lost to the Soviet Union, 1945

• East Prussia including Königsberg which is now modern day Kaliningrad a Russian exclave.

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