In Croatia, Ernst families are mainly Croats (from Osijek area ), less frequently Hungarians (from Beli Manastir area ), and very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Beli Manastir area and in Zagreb.
Prevalence
About 20 people with faimily name Ernst live in Croatia today, in 11 households. There were 30 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 7 Croatian counties, in 6 cities and four other places, mostly in Zagreb (<10), Darda in Osijek area (<10), Knezevi Vinogradi in Beli Manastir area (<10), Split (<5), and in Rovinj (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.