Potroško families are Croats and they are mostly from Koprivnica area. In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica area and in Koprivnica. In Pustakovec in Koprivnica area every sixth inhabitant had the family name Potroško.
Prevalence
About 80 people with faimily name Potroško live in Croatia today, in 30 households. There were 70 of them in the middle of the past century, and their number increased by 0 percent. They are located in threee Croatian counties, four cities and four other places, mostly in Koprivnica (25), Pustakovec in Koprivnica area (15), Ferdinandovac in Djurdjevac area (10), Ivanic-Grad (<5), and in Bjelovar (<5).
Outside Croatia
Family name Potroško is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.