In Croatia, Haller families are generally Croats (from Sisak ), very rarely Italians (from Rijeka ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Sisak.
Prevalence
About 40 people with faimily name Haller live in Croatia today, in 20 households. There were 40 of them in the middle of the past century, and their number remains constant. They are located in 7 Croatian counties, in 7 cities and two other places, mostly in Zagreb (10), Rijeka (<10), Sisak (<10), Osijek (<10), and in Viskovo in Rijeka area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.