Demographics of Poland
According to GUS, about 38,325,000 people live in Poland, however, the same report states that the number of residents living in the country all the time is approximately 37,200,000; with 1,125,000 people living abroad for 6 to 7 months or more. It means that the permanent population may be correspondingly smaller.
Poles
Prior to World War II, a third of Poland's population was composed of ethnic minorities. Following the war, however, Poland's minorities were mostly gone, due to the 1945 revision of borders, and the Holocaust. Most notably, the population of Jews in Poland, which formed the largest Jewish community in pre-war Europe at about 3 million people, was almost completely annihilated by 1945.