In Croatia, Mandich families are Croats (from Opatija ).
Prevalence
About 30 people with faimily name Mandich live in Croatia today, in two households only. There were 30 of them in the middle of the past century, and their number remains constant. They are located in only two Croatian places: in Opatija (<5) and Marcelji in Rijeka area (<5).
Outside Croatia
Family name Mandich is present in 29 countries worldwide. The family name "Mandich " is used by some 900 people in the United States , about 400 in Italy , and some 100 people in South Africa.
In the sources analysed in the project Acta Croatica so far, the name is mentioned about one hundred times, the first time 1842 in source Catholic Church Parish Records 1842.