Demographics of Poland
According to the 2011 census by the Polish Central Statistical Office (GUS), at the end of 2011 Poland had a population of 38,538,447, which translates into an average population density of 123 people/km (urban 1105 per 1 km², rural 50 per 1 km²). 61.5% of the Polish population lives in urban areas, a number which is slowly diminishing. Poland is the 33rd most populous country in the world (9th in Europe, with 5.4% of the European population). Total population of Poland is almost stagnant (population growth was 0.08%). Average life expectancy was 70.5 for men and 78.9 for women. In 2009, it was expected to be 73.1 for men and 79.5 for women. Population distribution is uneven. Ethnically, Poland is a very homogeneous country, with 96.7% of population being Polish.
Territories of Poland annexed by the Soviet Union
On August 16, 1945 the Communist-dominated Polish government signed a treaty with the USSR to formally cede these territories. The total population of the territories annexed by the USSR, not including the portion returned to Poland in 1945, had an estimated population of 10,653,000 according to the 1931 Polish census. In 1939 this had increased to about 11.6 million. The composition by language group was Ukrainian 37.1%, Polish 36.5%, Belarusian 15.1%, Yiddish 8.3%, Other 3%. Religious affiliation: Eastern Orthodox 31.6%, Roman Catholic 30.1%, Ukrainian Greek Catholic Church 26.7%, Jewish 9.9%, Other 1.7%.