In Croatia, Seđak families are Croats (from Bjelovar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and in Bjelovar area.
Prevalence
About 20 people with faimily name Seđak live in Croatia today, in 8 households. There were 30 of them in the middle of the past century, and their number decreased by 40 percent. They are located in threee Croatian counties, four cities and threee other places, mostly in Babotok in Bjelovar area (<5), Krizevci (<5), Jabuceta in Bjelovar area (<5), Zagreb (<5), and in Koprivnica (<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.