Siedlce Department
Siedlce Department (Polish: Departament siedlecki) was a unit of administrative division and local government in Polish Duchy of Warsaw in years 1809–1815.
Its capital city was Siedlce, and it was further divided onto 9 powiats.
In 1815 it was transformed into Podlasie Voivodeship.
52°09′00″N 22°16′00″E / 52.150000°N 22.266667°E
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