In Croatia, Ročak families are Croats (from Zadar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zadar and in Zadar area. In Debeljak in Zadar area every fourtieth inhabitant had the family name Ročak.
Prevalence
About 40 people with faimily name Ročak live in Croatia today, in 15 households. There were 60 of them in the middle of the past century, and their number decreased by 30 percent. They are located in only five naselja i to in Sukosan (25) and Debeljak (<10) in Zadar area, Zadar (<10), Koprivnica (<5), and in Zagreb (<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.