New East Prussia

New East Prussia (German: Neuostpreußen; Polish: Prusy Nowowschodnie; Lithuanian: Naujieji Rytprūsiai) was a province of the Kingdom of Prussia from 1795 to 1807. It was created out of territory annexed in the Third Partition of Polish-Lithuanian Commonwealth and included parts of Masovia, Podlaskie, Trakai voivodeship and Žemaitija. In 1806 it had 914,610 inhabitants with a territory of less than 55,000 km², mainly Poles, Lithuanians, Jews and Belarusians.

Province of New East Prussia
Provinz Neuostpreußen
Province of Kingdom of Prussia

New East Prussia in 1806
55,000 km2 (21,000 sq mi)
October 24 1795
July 9 1807
Political subdivisionsBialystok
Preceded by
Succeeded by
Masovian Voivodeship (1526–1795)
Podlaskie Voivodeship (1513–1795)
Trakai Voivodeship
Duchy of Warsaw
Russian Empire


New East Prussia encompassed territory between East Prussia and the Vistula, Bug River, and Neman rivers.

1807 Treaties of Tilsit

Following Napoleon Bonaparte's victory in the War of the Fourth Coalition and the Greater Poland Uprising of 1806 the Province of New East Prussia was ceded according to the 1807 Treaties of Tilsit:

Administrative divisions

New East Prussia was divided into the Kammerdepartements Bialystok and Płock which were divided into the following counties (Kreise):


  1. Evgeny Finkel, Ordinary Jews: Choice and Survival during the Holocaust, Princeton University Press, 21/02/2017

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