In Croatia, Kućas families are Croats (from Ozalj ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Zagreb.
Prevalence
About 30 people with faimily name Kućas live in Croatia today, in 14 households. There were 40 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties, in 6 cities and threee other places, mostly in Mali Erjavec (10), Zagreb (<10), Jastrebarsko (<10), Karlovac (<5), and in Slapno (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.