in both world wars, during the Invasion of Poland (September 1939), retreating units of the Polish Army fought here a battle with the Wehrmacht, in which app. 100 Poles died. As a result of World War I and World War II destruction, there are no other historic buildings in Osiek, except for the parish church. Demographics According to the 2011 Polish census, there were 2,001 people residing in Osiek, of whom 50% were male and 50% were female. In the town, the population consisted of 21.2% inhabitants under the age of 18; 38.6% between the age of 18 and 44; 23.6% from 45 to 64; and 16.6% residents who were 65 years of age or older. Figure 1. Population pyramid in 2010 – by age group and sex Former parts of town – physiographic objects In the years 1970 of last age, sorted and prepared out list part of names of localities for Osiek, at as type of settlement then yet is a village, what you can see in table 3. Remaining not exchanged parts here are described in integral part of town Osiek now, in Osieczko. References Cities and towns in Świętokrzyskie Voivodeship Staszów County Sandomierz Voivodeship Radom Governorate Kielce Voivodeship (1919–1939)