In Croatia, Štefko families are generally Croats (from Prelog area ), very rarely Hungarians (from Vinkovci ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Prelog area and in Vinkovci.
Prevalence
About 30 people with faimily name Štefko live in Croatia today, in 10 households. There were 50 of them in the middle of the past century, and their number decreased by 30 percent. They are only located in two Croatian cities and 5 other places, mostly in Kotoriba in Prelog area (15), Cerna in Zupanja area (<10), Klokocevec Samoborski (<5), Zagreb (<5), and in Podvrh (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.