Kolenko families are Croats and they are mostly from Ivanec area. In the past century, relatively most of Croatian residents bearing this family name were born in Ivanec area and in Varazdin.
Prevalence
About 340 people with faimily name Kolenko live in Croatia today, in 120 households. There were 340 of them in the middle of the past century, and their number remains constant. They are located in the most of Croatian counties, in 19 cities and 30 other places, mostly in Zagreb (45), Varazdin (25), Vulisinec (25), Donje Ladanje in Ivanec area (20), and in Koprivnica (20).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.