Kotarski families are Croats and they are mostly from Zabok area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Zabok area.
Prevalence
About 350 people with faimily name Kotarski live in Croatia today, in 130 households. There were 350 of them in the middle of the past century, and their number remains constant. They are located in the most of Croatian counties, in 14 cities and 37 other places, mostly in Zagreb (85), Samobor (35), in Kotarice (30) and Ciglenica Zagorska (25) in Zabok area, and in Kladje (15).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.