Kružić families are Croats and they are mostly from Bakar. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Karlovac.
Prevalence
About 360 people with faimily name Kružić live in Croatia today, in 160 households. There were 460 of them in the middle of the past century, and their number decreased by 20 percent. They are located in the most of Croatian counties, in 25 cities and 38 other places, mostly in Hreljin (60), Rijeka (40), Zlobin (35), Zadobarje (25), and in Zagreb (20).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1691 in source Catholic Church Parish Records.