In Croatia, Jambrač families are Croats (from Vrbovec ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Vrbovec.
Prevalence
About 20 people with faimily name Jambrač live in Croatia today, in four households only. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Zagreb (<10), Brcevec (<5), Negovec (<5), and in Luka (<5).
Outside Croatia
Family name Jambrač (including: Jambrac , Yambrach ) is present in four countries on two continents. "Yambrach " 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 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.