Sedak families are Croats and they are mostly from Zlatar area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Zlatar area.
Prevalence
About 170 people with faimily name Sedak live in Croatia today, in 70 households. There were 230 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 6 Croatian counties, in 9 cities and 17 other places, mostly in Mace in Zlatar area (50), Zagreb (50), Ivanic-Grad (10), Popovaca in Kutina area (10), and in Mali Komor in Zlatar area (<10).
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.