In Croatia, Domancich families are Croats (from Rijeka ).
Prevalence
Only a few people with faimily name Domancich live in Croatia today, in one household only. They are located in one Croatian city only, in Rijeka (<5).
Outside Croatia
Family name Domancich is present in 9 countries on three continents. "Domanchich " is used by few 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 1729 in source Catholic Church Parish Records.