In Croatia, Sinkić families are predominantly Serbs, rarely Croats. In the past century, relatively most of Croatian residents bearing this family name were born in Bosnian Krajina (Kotor Varos area) and in Kutina.
Prevalence
About 20 people with faimily name Sinkić live in Croatia today, in 7 households. They are located in only threee naselja i to in Kutina (<10), Stupovaca (<10), and in Garesnica (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.