In Croatia, Kralj-Vlašić families are Croats (from Cazma area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Sisak.
Prevalence
About 10 people with faimily name Kralj-Vlašić 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 four Croatian places: in Belovar (<10), Okoli in Cazma area (<5), Zagreb (<5), and in Sesvete (<5).
Outside Croatia
Family name Kralj-Vlašić is present in this form only in Croatia.