Kolarec families are Croats and they are mostly from Velika Gorica area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Velika Gorica area.
Prevalence
About 330 people with faimily name Kolarec live in Croatia today, in 130 households. There were 300 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 21 cities and 34 other places, mostly in Zagreb (80), Kravarsko in Velika Gorica area (70), Velika Gorica (50), Gostenje in Pregrada area (15), and in Samobor (15).
Outside Croatia
Family name Kolarec is present in 10 countries on three continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.