In Croatia, Ramušćak families are almost entirely Croats (from Ozalj ), barely Slovenes (from Zagreb ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Ozalj and in Ivanec area. In Vuketić in Ozalj every seventh inhabitant had the family name Ramušćak.
Prevalence
About 60 people with faimily name Ramušćak live in Croatia today, in 30 households. There were 40 of them in the middle of the past century, and their number increased by 30 percent. They are located in 8 Croatian counties, in 9 cities and threee other places, mostly in Zagreb (20), Varazdin (<10), Cakovec (<10), Petrinja (<10), and in Cerje Vivodinsko (<5).
Outside Croatia
At least eight families with this surname emigrated from Croatia to: Germany (4), the United States (2), Canada (1), and to Australia (1). Family name Ramušćak is present in 7 countries on three continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.