Potkonjak families are podjednako Croats (the family name originates from Zagreb ) and Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Gospic and Otocac. In Ornice in Gospic nearly every inhabitant had the family name Potkonjak.
Prevalence
About 220 people with faimily name Potkonjak live in Croatia today, in 120 households. There were 450 of them in the middle of the past century, and their number halved. They are located in almost all Croatian counties, in 27 cities and 27 other places, mostly in Zagreb (90), Vinkovci (15), Rijeka (10), Podlapaca in Obrovac area (10), and in Osijek (<10).
Outside Croatia
Family name Potkonjak is present in 11 countries on four continents. The family name "Potkonjak " is used by some 70 people in the United States , small number in Canada , and small number of people in Australia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 2007 in source Encyclopaedia of Croatian Surnames.