In Croatia, Jambreušić families are Croats (from Koprivnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica and in Koprivnica area.
Prevalence
About 20 people with faimily name Jambreušić live in Croatia today, in five households only. There were 40 of them in the middle of the past century, and their number halved. They are located in only four naselja i to in Koprivnica (<10), Rijeka (<5), Subotica Podravska in Koprivnica area (<5), and in Murter on the Island of Murter (<5).
Outside Croatia
Family name Jambreušić is present in this form only in Croatia.