In Croatia, Rušak families are Croats (from Djurdjevac area ). In the past century, relatively most of Croatian residents bearing this family name were born in Djurdjevac area and in Koprivnica.
Prevalence
About 50 people with faimily name Rušak live in Croatia today, in 19 households. There were 40 of them in the middle of the past century, and their number increased by 20 percent. They are located and threee other Croatian places, mostly in Koprivnica (25), Novigrad Podravski in Djurdjevac area (10), Zagreb (<10), Repas in Djurdjevac area (<10), and in Osijek (<5).
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.