In Croatia, Koritnik families are Croats (from Cabar ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Cabar.
Prevalence
About 60 people with faimily name Koritnik live in Croatia today, in 20 households. There were 70 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties, in 10 cities, mostly in Zagreb (25), Rijeka (<10), Prezid (<10), Pretoki (<10), and in Zadar (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.