In Croatia, Stivan families are Croats (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Zagreb.
Prevalence
About 10 people with faimily name Stivan live in Croatia today, in five households only. There were 20 of them in the middle of the past century, and their number halved. They are located in one Croatian city only, in Zagreb (<10).
Outside Croatia
Family name Stivan (including: Stiwan , Stywan and Sthivan ) is present in 17 countries worldwide.