Režek families are Croats and they are mostly from Prelog. According to some sources they are from Jurjevcani in Plesivica area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Cakovec. In Plešivica in Jastrebarsko every sixth inhabitant had the family name Režek.
Prevalence
About 290 people with faimily name Režek live in Croatia today, in 130 households. There were 330 of them in the middle of the past century, and their number decreased by 10 percent. They are located in the most of Croatian counties, in 20 cities and 29 other places, mostly in Zagreb (80), Prelog (30), Plesivica (30), Cirkovljan (15), and in Jurjevcani (15).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.