In Croatia, Hainz families are Croats (from Bosnian Krajina ). In the past century, relatively most of Croatian residents bearing this family name were born in Bosnian Krajina (Prijedor area).
Prevalence
Only a few people with faimily name Hainz live in Croatia today, in three households only. They are located in only two Croatian places: in Zagreb (<5) and Brezovec in Mursko Sredisce area (<5).
Outside Croatia
Family name Hainz is present in 22 countries worldwide. The family name "Hainz " is used by some 1000 people in Germany , about 400 in Austria , and some 200 people in the United States. "Chainz " is used by small number of people in the United States.