Kutnjak families are Croats and they are mostly from Mursko Sredisce area. In the past century, relatively most of Croatian residents bearing this family name were born in Cakovec and Zagreb.
Prevalence
About 500 people with faimily name Kutnjak live in Croatia today, in 220 households. There were 490 of them in the middle of the past century, and their number remains constant. They are located in the most of Croatian counties, in 24 cities and 68 other places, mostly in Zagreb (60), Cakovec (45), Varazdin (35), and in Sveti Martin na Muri (25) and Selnica (20) in Mursko Sredisce area.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.