In Croatia, Kocek families are Croats (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.
Prevalence
About 20 people with faimily name Kocek live in Croatia today, in 9 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in two Croatian counties, two cities and four other places, mostly in Majkovec (<10), Paukovec (<10), Krizevcec (<10), Zagreb (<5), and in Sesvete (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1929 in source Emigration Commission Zagreb.