In Croatia, Haupt families are predominantly Croats (from Ilok area ), rarely Hungarians (also from Ilok area ). In the past century, relatively most of Croatian residents bearing this family name were born in Ilok area and in Vukovar.
Prevalence
About 10 people with faimily name Haupt live in Croatia today, in 6 households. There were 30 of them in the middle of the past century, and their number decreased significantly. They are located in only five naselja i to in Cakovci in Ilok area (<10), Zagreb (<5), Split (<5), Krizevci (<5), and in Golo Brdo (<5).
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Haupt is present in 54 countries worldwide. The family name "Haupt " is used by some 20000 people in Germany , about 10000 in South Africa , and some 10000 people in the United States.
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.