Seifert families are Croats and they are mostly from Pleternica area. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Pozega.
Prevalence
About 80 people with faimily name Seifert live in Croatia today, in 30 households. There were 30 of them in the middle of the past century, and their number more than doubled. They are located in 8 Croatian counties, in 10 cities and 7 other places, mostly in Rijeka (30), Vukovar (15), Pozega (10), Zagreb (10), and in Pleternica (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.