In Croatia, Kvarantan families are almost entirely Croats (from Trogir area ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Split and Trogir.
Prevalence
About 40 people with faimily name Kvarantan live in Croatia today, in 20 households. There were 40 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties, in 7 cities and threee other places, mostly in Split (15), Zagreb (10), Marina in Trogir area (10), Zadar (<5), and in Slavonski Brod (<5).
Outside Croatia
Family name Kvarantan is present in 6 countries on four continents. The family name "Kvarantan " is used by small number of people in the United States.