In Croatia, Štumergar families are Croats (from Ivanec area ). In the past century, relatively most of Croatian residents bearing this family name were born in Ivanec area.
Prevalence
Only a few people with faimily name Štumergar live in Croatia today, in five households only. They are located in only two Croatian places: in Jelovec Vocanski (<10) and Donja Voca (<5) in Ivanec area.
Outside Croatia
Family name Štumergar is present in this form only in Croatia.