In Croatia, Kladušan families are Croats (from Ozalj area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Ozalj area.
Prevalence
About 20 people with faimily name Kladušan live in Croatia today, in 9 households. There were 30 of them in the middle of the past century, and their number decreased by 40 percent. They are located in threee Croatian counties, threee cities and 5 other places, mostly in Misinci in Ozalj area (<10), Karlovac (<5), Zagreb (<5), and in Kohanjac (<5) and Grice (<5) in Ozalj area.
Outside Croatia
Family name Kladušan is present in this form only in Croatia.