In Croatia, Kuač families are generally Croats (from Sibenik ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Drnis and Sibenik.
Prevalence
About 20 people with faimily name Kuač live in Croatia today, in 8 households. They are located in only threee naselja i to in Sibenik (15), Vodice (<5), and in Radonic (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.