Štefek families are Croats and they are mostly from Donja Stubica. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Donja Stubica. In Matenci in Donja Stubica every sixth inhabitant had the family name Štefek.
Prevalence
About 200 people with faimily name Štefek live in Croatia today, in 80 households. There were 180 of them in the middle of the past century, and their number increased by 10 percent. They are located in the most of Croatian counties, in 15 cities and 10 other places, mostly in Matenci (60), Zagreb (50), Donja Stubica (30), Zarovnica (10), and in Bjelovar (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.