In Croatia, Gerek families are almost entirely Croats (from Klanjec area ), barely Hungarians (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Klanjec area.
Prevalence
About 40 people with faimily name Gerek live in Croatia today, in 20 households. There were 90 of them in the middle of the past century, and their number decreased significantly. They are only located in in 6 Croatian cities and four other places, mostly in Zagreb (40), Zabok (<5), Ravna Gora in Delnice area (<5), and in Trsteno (<5) and Glogovec Zagorski (<5) in Klanjec area.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1678 in source Catholic Church Parish Records.