Čičak families are Croats and they are mostly from Bosnian Posavina. According to some sources from Kupres, Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Derventa area) and in Zagreb. In places Brezici and Tunjestala in Bosanian Posavina every fourth inhabitant had the family name Čičak.
About 1300 people with faimily name Čičak live in Croatia today, in 480 households. There were 140 of them in the middle of the past century, and their number multiplied. They are located in all Croatian counties, in 51 cities and 108 other places, mostly in Zagreb (415), Sesvete (170), Slavonski Brod (75), Osijek (35), and in Ivanic-Grad (35).