Kljaić families are mainly Croats and they are mostly from Bosnian Posavina , often Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Bosanski Brod area) and in Slavonski Brod.
Prevalence
About 680 people with faimily name Kljaić live in Croatia today, in 350 households. There were 1000 of them in the middle of the past century, and their number decreased by 30 percent. They are located in almost all Croatian counties, in 50 cities and 101 other places, mostly in Zagreb (115), Slavonski Brod (110), Bosnjaci in Zupanja area (50), Zupanja (40), and in Osijek (30).
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.