Piosek was established most probably in the 14th century. Historians presume that on the basis of establishment date of nearby Bukowiec (1353). Oldest document mentioning the village is from 1466. In the 14th and 15th centuries villagers lived mainly off simple farming, pastures and forest work. As a result of Thirty Years' War number of farms, farmers, millers etc. dropped. After the establishment of Třinec Iron and Steel Works in 1839 many inhabitants of the village went there to work as a workers.
A road linking the Polish village of Istebna with Jablunkov runs through the village. The majority of population are religious, most of which are Roman Catholics. There is a Catholic church in the village and a SCEAV Lutheran church consecrated in 2010.
Cicha, Irena; Kazimierz Jaworski, Bronisław Ondraszek, Barbara Stalmach and Jan Stalmach (2000). Olza od pramene po ujście. Český Těšín: Region Silesia. ISBN80-238-6081-X.Cite uses deprecated parameters (help)
* More than 10% of total population; 2001 census data. **Karviná fell under 10% in the 2001 census.
Villages with significant Polish population under the administration of another municipality are not listed.