In Croatia, Bonjaj families are Croats (from Ivanic-Grad ). In the past century, relatively most of Croatian residents bearing this family name were born in Nova Gradiska area and in Kutina.
Prevalence
About 10 people with faimily name Bonjaj live in Croatia today, in 7 households. There were 20 of them in the middle of the past century, and their number halved. They are located in four Croatian cities only: in Ivanic-Grad (<10), Osijek (<5), Pula (<5), and in Rijeka (<5).