Kučan families are Croats and they are mostly from Kraljevica. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Zagreb.
Prevalence
About 480 people with faimily name Kučan live in Croatia today, in 240 households. There were 570 of them in the middle of the past century, and their number decreased by 20 percent. They are located in almost all Croatian counties, in 37 cities and 54 other places, mostly in Rijeka (55), Zagreb (45), Hreljin (45), Kraljevica (25), and in Koprivnica (20).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over seventy times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.