In Croatia, Olejnik families are Croats (from Vrbovec ). In the past century, relatively most of Croatian residents bearing this family name were born in Vrbovec and in Bosnian Krajina (Prijedor area).
Prevalence
Only a few people with faimily name Olejnik live in Croatia today, in five households only. 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 Zunci (<10) and Zagreb (<5).