In Croatia, Hellmann families are Croats (from Duga Resa ). In the past century, relatively most of Croatian residents bearing this family name were born in Duga Resa and Karlovac.
Prevalence
Only a few people with faimily name Hellmann live in Croatia today, in three households only. They are located in three Croatian cities only: in Karlovac (<5), Duga Resa (<5), and in Zagreb (<5).
Outside Croatia
Family name Hellmann is present in 48 countries worldwide. The family name "Hellmann " is used by some 9000 people in Germany , about 2000 in the United States , and some 2000 people in Brazil. "Thellmann " is used by some 600 people in Germany , about 60 in the United States , and small number of people in Romania.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.