Blažetić families are Croats and they are mostly from Nova Gradiska area. In the past century, relatively most of Croatian residents bearing this family name were born in Nova Gradiska area and in Gospic.
Prevalence
About 90 people with faimily name Blažetić live in Croatia today, in 40 households. There were 200 of them in the middle of the past century, and their number halved. They are located in the most of Croatian counties, in 12 cities and 7 other places, mostly in Stivica in Nova Gradiska area (40), Zagreb (15), Josipovac (15), Puricani (10), and in Kraljevica (<10).
Outside Croatia
Family name Blažetić (including: Blazetic , Blazetich ) is present in four countries on two continents. The family name "Blazetic " is used by some 100 people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.