In Croatia, Klein families are Croats (from Split ), barely Hungarians (also from Split ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Split.
Prevalence
About 80 people with faimily name Klein live in Croatia today, in 50 households. There were 80 of them in the middle of the past century, and their number remains constant. They are located in 8 Croatian counties, in 9 cities and threee other places, mostly in Split (30), Zagreb (15), Varazdin (<10), Osijek (<10), and in Umag (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over sixty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.