Stepušin families are Croats and they are mostly from Jastrebarsko area. In the past century, relatively most of Croatian residents bearing this family name were born in Jastrebarsko area and in Zagreb.
Prevalence
About 50 people with faimily name Stepušin live in Croatia today, in 20 households. There were 110 of them in the middle of the past century, and their number halved. They are located in four Croatian counties and another small place , mostly in Donja Kupcina in Jastrebarsko area (40), Velika Gorica (<5), Krk on the Island of Krk (<5), Cvetkovic (<5), and in Gornji Niksic (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.