In Croatia, Hiller families are Croats (from Bosnian Posavina ). In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Bosanski Brod area) and in Bosanian Posavina (Derventa area).
Prevalence
Only a few people with faimily name Hiller live in Croatia today, in two households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in two Croatian cities only, in Slavonski Brod (<10) and Kutina (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.