In Croatia, Jambrak families are Croats (from Sveti Ivan Zelina ). In the past century, relatively most of Croatian residents bearing this family name were born in Sveti Ivan Zelina and Zagreb.
Prevalence
About 40 people with faimily name Jambrak live in Croatia today, in 16 households. There were 40 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties, in 6 cities and two other places, mostly in Donja Drenova (10), Zagreb (10), Lemes Krizevacki (<5), Donja Zelina (<5), and in Rijeka (<5).
Outside Croatia
Family name Jambrak is present in five countries on three continents. "Yambrach " is used by small number of people in the United States.