Kolarek families are Croats and they are mostly from Ivanec area. According to some sources they are Czech origin. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and Zagreb. In Tužno in Varazdin area every twentieth inhabitant had the family name Kolarek.
Prevalence
About 390 people with faimily name Kolarek live in Croatia today, in 150 households. There were 360 of them in the middle of the past century, and their number increased by 10 percent. They are located in the most of Croatian counties, in 16 cities and 47 other places, mostly in Zagreb (70), Varazdin (55), Koprivnica (35), Prelog (30), and in Ivanec (15).
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Kolarek (including: Kolarec , Kollarek ) is present in 13 countries on three continents. The family name "Kolarek " is used by some 70 people in the United States , small number in Canada , and small number of people in Germany. "Kollarek " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.
