In Croatia, Perašin families are Croats (from Karlovac ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac.
Prevalence
About 20 people with faimily name Perašin live in Croatia today, in 10 households. There were 30 of them in the middle of the past century, and their number decreased by 20 percent. They are located in two Croatian cities only, in Karlovac (15) and Podgraj (<5).
Outside Croatia
Family name Perašin is present in five countries on three continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.