In Croatia, Šišnović families are Croats (from Karlovac ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Sisak.
Prevalence
About 20 people with faimily name Šišnović live in Croatia today, in 8 households. There were 50 of them in the middle of the past century, and their number decreased significantly. They are located in only four naselja i to in Karlovac (10), Zadobarje (10), Petrinja (<5), and in Cokuni in Pula area (<5).
Outside Croatia
Family name Šišnović is present in this form only in Croatia.