In Croatia, Kumičić families are Croats (from Opatija ). In the past century, relatively most of Croatian residents bearing this family name were born in Opatija. In Poljane in Opatija every fiftieth inhabitant had the family name Kumičić.
Prevalence
About 10 people with faimily name Kumičić live in Croatia today, in 9 households. There were 50 of them in the middle of the past century, and their number decreased significantly. They are located in threee Croatian counties and threee other places, mostly in Icici (<5), Moscenice in Opatija area (<5), Zagreb (<5), Rijeka (<5), and in Pozega (<5).
Outside Croatia
At least three families with this surname emigrated from Croatia to the United States (2) and France (1). Family name Kumičić (including: Kumicich , Kumicic and Cumicich ) is present in four countries on two continents. "Kumicich " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1938 in source Phone Book - Zagreb 1938.