In Croatia, Gažan families are Croats (from Karlovac ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Zagreb.
Prevalence
About 10 people with faimily name Gažan live in Croatia today, in 6 households. There were 20 of them in the middle of the past century, and their number halved. They are located in two Croatian cities only, in Karlovac (<10) and Zagreb (<10).
Outside Croatia
Family name Gažan (including: Gazan , Gazhan , Gazzán and Ghazan ) is present in 34 countries worldwide.