In Croatia, Fok families are generally Croats (from Jastrebarsko ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Jastrebarsko and Karlovac.
Prevalence
About 40 people with faimily name Fok 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 four naselja i to in Guci Draganicki (25), Vuksin Sipak (<10), Brlenic in Jastrebarsko area (<10), and in Draganic in Karlovac area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.