In Croatia, Bartolek families are Croats (from Oroslavje area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Zlatar.
Prevalence
About 40 people with faimily name Bartolek live in Croatia today, in 13 households. There were 60 of them in the middle of the past century, and their number decreased by 40 percent. They are located in four Croatian counties, four cities and two other places, mostly in Zlatar-Bistrica in Oroslavje area (35), Zagreb (<10), Zlatar (<5), Varazdin (<5), and in Zapresic (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.