East Prussia

East Prussia
Ostpreußen (German)
Province of Prussia
1772–1829
1878–1945
Flag
Coat of arms

East Prussia (red), within the Kingdom of Prussia (blue), within the German Empire, between 1871 and 1918

East Prussia (red), within the Free State of Prussia (blue), within the borders of Interwar Germany, between 1919 and 1938
Anthem
Ostpreußenlied
"Song of East Prussia"
(1930—1945)
CapitalKönigsberg
DemonymEast Prussian
Area 
• 1905
36,993 km2 (14,283 sq mi)
Population 
• 1905
2,030,174
History 
31 January 1772
• Province of Prussia
3 December 1829
• Province restored
1 April 1878
1 August 1945
Political subdivisionsGumbinnen
Königsberg
Allenstein (from 1905)
West Prussia (1922–1939)
Zichenau (from 1939)
Preceded by
Succeeded by
Duchy of Prussia
Province of Prussia
Klaipėda Region
Marienwerder (region)
Second Polish Republic
Provisional Government of National Unity
Soviet Union
Today part of

East Prussia (German: Ostpreußen [ˈɔstˌpʁɔɪ̯sn̩] ) was a province of the Kingdom of Prussia from 1772 to 1829 and again from 1878 (with the Kingdom itself being part of the German Empire from 1871); following World War I it formed part of the Weimar Republic's Free State of Prussia, until 1945. Its capital city was Königsberg (present-day Kaliningrad). East Prussia was the main part of the region of Prussia along the southeastern Baltic Coast.