In Croatia, Šiber families are generally Croats (from Zupanja area ), very rarely Germans (from Sisak ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Bosanian Posavina (Gradacac area).
Prevalence
About 20 people with faimily name Šiber live in Croatia today, in 10 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties, threee cities and threee other places, mostly in Zagreb (<10), Gunja in Zupanja area (<10), Donja Bebrina in Slavonski Brod area (<5), Pula (<5), and in Sisak (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.