In Croatia, Ronjak families are generally Croats (from Vrbovec ), very rarely Bosniaks (also from Vrbovec ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Vrbovec and Zagreb. In Greda in Vrbovec every fourth inhabitant had the family name Ronjak.
Prevalence
About 40 people with faimily name Ronjak live in Croatia today, in 9 households. There were 10 of them in the middle of the past century, and their number multiplied. They are located in threee Croatian counties, threee cities and 6 other places, mostly in Sesvete (<10), Celine (<10), Topolovec (<10), Zagreb (<5), and in Vrbovec (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1930 in source Emigration Commission Zagreb.