Poles
Polish people are the sixth largest national group in the European Union. Estimates vary depending on source, though available data suggest a total number of around 60 million people worldwide (with roughly 21 million living outside of Poland, many of whom are not of Polish ethnicity, but Polish nationals). There are almost 38 million Poles in Poland alone. There are also Polish minorities in the surrounding countries including (Germany), and indigenous minorities in the Czech Republic, Hungary, Slovakia, northern and eastern Lithuania, western Ukraine, and western Belarus. There are some smaller indigenous minorities in nearby countries such as Moldova. There is also a Polish minority in Russia which includes indigenous Poles as well as those forcibly deported during and after World War II; the total number of Poles in what was the former Soviet Union is estimated at up to 3 million.
Demographic history of Poland
Before World War II, a third of Poland's population was composed of ethnic minorities. After the war, however, Poland's minorities were mostly gone, due to the 1945 revision of borders, and the Holocaust. Under the National Repatriation Office ("Państwowy Urząd Repatriacyjny"), millions of Poles were forced to leave their homes in the eastern Kresy region and settle in the western former German territories. At the same time approximately 5 million remaining Germans (about 8 million had already fled or had been expelled and about 1 million had been killed in 1944-46) were similarly expelled from those territories into the Allied occupation zones. Ukrainian and Belarusian minorities found themselves now mostly within the borders of the Soviet Union; those who opposed this new policy (like the Ukrainian Insurgent Army in the Bieszczady Mountains region) were suppressed by the end of 1947 in the Operation Vistula.