In Croatia, Cociancich families are predominantly Italians (from Umag ), rarely Croats (also from Umag ). In the past century, relatively most of Croatian residents bearing this family name were born in Umag and Buje.
Prevalence
About 20 people with faimily name Cociancich live in Croatia today, in three households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only four naselja i to in Savudrija (10), Crveni Vrh (<5), Umag (<5), and in Basanija (<5).
Outside Croatia
Family name Cociancich is present in 8 countries on three continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.