In Croatia, Tomazetić families are Croats (from Cazma area ). In the past century, relatively most of Croatian residents bearing this family name were born in Sisak and in Pag area.
Prevalence
About 20 people with faimily name Tomazetić 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 Zagreb (10), Sisak (<10), and in Velika Ludina (<5) and Grabricina (<5) in Cazma area.
Outside Croatia
Family name Tomazetić is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.