In Croatia, Kotnik families are generally Croats (from Pazin ), rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Jastrebarsko.
Prevalence
About 60 people with faimily name Kotnik live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number increased by 10 percent. They are only located in in 7 Croatian cities and threee other places, mostly in Zagreb (45), Varazdin (<10), Pazin (<5), Labin (<5), and in Lucko (<5).
Outside Croatia
Family name Kotnik is present in 24 countries worldwide. The family name "Kotnik " is used by some 400 people in the United States , about 100 in Austria , and some 100 people in Germany. "Kotnick " is used by small number of people in the United States and small number in Brazil.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1938 in source Emigration Commission Zagreb.