In Croatia, Peterko families are predominantly Croats (from Nasice area ), rarely Serbs, and very rarely Slovaks (from Nasice area ). In the past century, relatively most of Croatian residents bearing this family name were born in Nasice area and in Virovitica.
Prevalence
About 20 people with faimily name Peterko live in Croatia today, in 10 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in four Croatian counties, in 6 cities and two other places, mostly in Zadar (<10), Podgorac in Nasice area (<5), Osijek (<5), Virovitica (<5), and in Slatina (<5).
Outside Croatia
Family name Peterko is present in 12 countries on three continents.
