In Croatia, Grgurin families are Croats (from Kastel Sucurac ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and Kastel Sucurac.
Prevalence
About 40 people with faimily name Grgurin live in Croatia today, in 16 households. There were 40 of them in the middle of the past century, and their number remains constant. They are only located in in 7 Croatian cities and 5 other places, mostly in Kastel Kambelovac (20), Plocice in Dubrovnik area (<10), Dubrovnik (<5), Sibenik (<5), and in Solin (<5).
Outside Croatia
Family name Grgurin is present in five countries on three continents.