In the past century, relatively most of Croatian residents bearing this family name were born in Hrvatska Kostajnica area. In Čapljani in Hrvatska Kostajnica area every ninth inhabitant had the family name Sibić.
Prevalence
Only a few people with faimily name Sibić live in Croatia today, in two households only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in one Croatian city only, in Osijek (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1926 in source Emigration Commission Zagreb.