In Croatia, Rovišnjak families are Croats (from Pregrada ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Pregrada.
Prevalence
About 10 people with faimily name Rovišnjak live in Croatia today, in 7 households. There were 10 of them in the middle of the past century, and their number remains constant. They are located in three Croatian cities only: in Vinagora (<10), Zagreb (<5), and in Zabok (<5).
Outside Croatia
Family name Rovišnjak is present in this form only in Croatia.
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.