Basic data of 2007 and retrospective data on number and structure of the population of Poland prepared on the basis of population balances. Results of the National Population and Housing Census 2002 regarding, among others, education, marital status, citizenship and nationality, sources of income, handicapped, family and household structure, as well as domestic and international migration. Additionaly, vital statistics and territorial movement of population in 2007, as well as international comprisons allwing the analysis of demographic changes in Poland against an international background.