In Croatia, Sadecki families are mainly Czechs (from Daruvar area ), less frequently Croats (from Vrbovec area ), and very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Pakrac and in Daruvar area.
Prevalence
About 20 people with faimily name Sadecki live in Croatia today, in 9 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only five naselja i to in Gornji Sredjani (<10) and Dezanovac (<5) in Daruvar area, Zvekovac in Vrbovec area (<5), Zagreb (<5), and in Pozega (<5).