In Croatia, Kalač families are generally Croats (from Cabar ), very rarely Montenegrins (from Rozaj, Montenegro ). In the past century, relatively most of Croatian residents bearing this family name were born in Rozaj, Montenegro and in Rijeka.
Prevalence
About 10 people with faimily name Kalač live in Croatia today, in 6 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in four Croatian counties and another small place , mostly in Zagreb (<10), Rijeka (<5), Pula (<5), Cakovec (<5), and in Savska Ves (<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.