In Croatia, Petri families are generally Croats (from Pleternica area ), very rarely Albanians (from Zagreb ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Banja Luka Region, Bosnia (Banja Luka area) and in Cazins Region, Bosnia (Bosanski Petrovac area).
Prevalence
About 40 people with faimily name Petri live in Croatia today, in 12 households. There were 20 of them in the middle of the past century, and their number doubled. They are located in 7 Croatian counties, in 7 cities and 6 other places, mostly in Dugo Selo (<10), in Luzani (<10) and Slavonski Kobas (<10) in Pleternica area, Zadar (<5), and in Zagreb (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1729 in source Catholic Church Parish Records.