In Croatia, Bartošek families are Croats (from Pozega ). In the past century, relatively most of Croatian residents bearing this family name were born in Pozega and in Pleternica area.
Prevalence
About 10 people with faimily name Bartošek live in Croatia today, in 8 households. There were 10 of them in the middle of the past century, and their number remains constant. They are located in two Croatian cities only, in Pozega (20) and Zagreb (<5).