Kladar families can be both Serbs and Croats. In the past century, relatively most of Croatian residents bearing this family name were born in Hrvatska Kostajnica area and in Zagreb.
Prevalence
About 60 people with faimily name Kladar live in Croatia today, in 30 households. There were 140 of them in the middle of the past century, and their number decreased significantly. They are located in 8 Croatian counties, in 9 cities and 11 other places, mostly in Zagreb (20), Hrtic in Hrvatska Kostajnica area (10), Dragotina (<10), Sisak (<10), and in Dvor in Hrvatska Kostajnica area (<10).