In Croatia, Isufi families are Croats (from Trogir area ). In the past century, relatively most of Croatian residents bearing this family name were born in Trogir and Split.
Prevalence
About 10 people with faimily name Isufi live in Croatia today, in five households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only threee naselja i to in Seget Gornji in Trogir area (<10), Dubrovnik (<5), and in Trogir (<5).
Outside Croatia
Family name Isufi is present in 27 countries worldwide.