Frljak families are Croats and they are mostly from Sveti Ivan Zelina. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Sveti Ivan Zelina. In Donja Drenova in Sveti Ivan Zelina every sixth inhabitant had the family name Frljak.
Prevalence
About 210 people with faimily name Frljak live in Croatia today, in 70 households. There were 210 of them in the middle of the past century, and their number remains constant. They are only located in in 7 Croatian cities and 19 other places, mostly in Donja Drenova (50), Zagreb (35), Dugo Selo (25), Luzan (20), and in Gornja Drenova (15).
Outside Croatia
Family name Frljak is present in 11 countries worldwide.
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.