In Croatia, Ruša families are Croats (from Duga Resa area ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and in Duga Resa area.
Prevalence
About 20 people with faimily name Ruša live in Croatia today, in four households only. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only threee naselja i to in Belajske Poljice in Duga Resa area (15), Karlovac (<5), and in Duga Resa (<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.