In Croatia, Ristin families are Croats (from Rovinj ).
Prevalence
Only a few people with faimily name Ristin live in Croatia today, in two households only. They are located in one Croatian city only, in Rovinj (<5).
Outside Croatia
Family name Ristin (including: Rystin , Hristin ) is present in 20 countries on four continents. The family name "Ristin " is used by some 200 people in Romania , about 100 in Indonesia , and 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 2007 in source Encyclopaedia of Croatian Surnames.