In Croatia, Janžetić families are Croats (from Ozalj ). In the past century, relatively most of Croatian residents bearing this family name were born in Ozalj and Karlovac.
Prevalence
About 40 people with faimily name Janžetić live in Croatia today, in 14 households. There were 30 of them in the middle of the past century, and their number increased by 10 percent. They are located in only five naselja i to in Ozalj (25), Karlovac (<10), Grdun (<10), Zadobarje (<5), and in Skradsko Selo in Ozalj area (<5).
Outside Croatia
At least three families with this surname emigrated from Croatia to Germany (2) and the United States (1). Family name Janžetić (including: Janzetic , Yanzetich ) is present in three countries on two continents. "Yanzetich " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1933 in source Emigration Commission Zagreb.