In Croatia, Dittrich families are Croats (from Velika Gorica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Sisak.
Prevalence
About 20 people with faimily name Dittrich live in Croatia today, in 9 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in 6 Croatian counties and threee other places, mostly in Velika Gorica (<10), Slavonski Brod (<5), Donja Lomnica (<5), Zagreb (<5), and in Kravarsko in Velika Gorica area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.