In Croatia, Sulin families are Croats (from Sisak ). In the past century, relatively most of Croatian residents bearing this family name were born in Sisak.
Prevalence
Only a few people with faimily name Sulin live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in two Croatian cities only, in Greda (<5) and Velika Gorica (<5).