The area was 28,951 km² and contained most of the territories of the historical province of Greater Poland, which comprised the western parts of the Duchy of Warsaw (Departments of Poznań, Bydgoszcz, partly Kalisz) that were ceded to Prussia according to the Congress of Vienna (1815) with an international guarantee of self-administration and free development of the Polish nation.
Pindala oli 28 951 km² ja sisaldas enamust ajaloolise Suur-Poola provintsi territooriumist, mis moodustasid Varssavi hertsogkonna lääneosa (Poznańi, Bydgoszczi, osaliselt Kaliszi departemangud), mis loovutati Viini kongressi (1815) järgi Preisimaale rahvusvahelise garantiiga omavalitsusest ja poola rahvuse vabast arengust.