In Croatia, Heimann families are Croats (from Osijek ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek.
Prevalence
Only a few people with faimily name Heimann live in Croatia today, in two households only. They are located in two Croatian counties, two cities and another small place , mostly in Osijek (<5), Zagreb (<5), and in Erdut in Vinkovci area (<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.