Kolenc families are usually Croats and they are mostly from Delnice area , rarely Slovenes. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Delnice area.
Prevalence
About 120 people with faimily name Kolenc live in Croatia today, in 60 households. There were 160 of them in the middle of the past century, and their number decreased by 20 percent. They are located in the most of Croatian counties, in 16 cities and 10 other places, mostly in Zagreb (45), Karlovac (10), Kutina (10), Zadar (<10), and in Ravna Gora in Delnice area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.