In Croatia, Supi families are Croats (from Bjelovar ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar.
Prevalence
Only a few people with faimily name Supi live in Croatia today, in three households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only two naselja i to in Novi Pavljani (<5) and Bjelovar (<5).