In Croatia, Zećo families are predominantly Croats (from Karlovac ), rarely Bosniaks (from Bosnian Posavina ). In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Derventa area).
Prevalence
About 10 people with faimily name Zećo live in Croatia today, in two households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in five Croatian cities only: in Karlovac (<5), Crikvenica (<5), Slavonski Brod (<5), Trogir (<5), and in Skrljevo (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.