In Croatia, Petz families are Croats (from Djakovo area ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and in Djakovo area.
Prevalence
About 20 people with faimily name Petz live in Croatia today, in 10 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only five naselja i to in Djakovo (10), Rijeka (<5), Opatija (<5), Podrvanj in Rijeka area (<5), and in Semeljci in Djakovo area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.