Potočnik families are usually Croats and they are mostly from Orahovica area , rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Orahovica area.
Prevalence
About 200 people with faimily name Potočnik live in Croatia today, in 100 households. There were 190 of them in the middle of the past century, and their number increased by 10 percent. They are located in the most of Croatian counties, in 20 cities and 27 other places, mostly in Zagreb (40), Ludbreg (15), Cetekovac in Orahovica area (15), Rijeka (10), and in Prezid (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.