In Croatia, Mrkaić families are Croats by relative majority (from Zagreb ), less frequently Serbs, and rarely Montenegrins (also from Slunj area ). In the past century, relatively most of Croatian residents bearing this family name were born in Slunj area and in Zagreb.
Prevalence
Only a few people with faimily name Mrkaić live in Croatia today, in four households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in three Croatian cities only: in Zagreb (<10), Pula (<5), and in Zapresic (<5).