In Croatia, Bijač families are Croats (from Koprivnica ). In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica and Zagreb.
Prevalence
About 30 people with faimily name Bijač live in Croatia today, in 13 households. There were 20 of them in the middle of the past century, and their number increased by 40 percent. They are located in only five naselja i to in Koprivnica (15), Zagreb (<10), Samobor (<10), Dubrovnik (<5), and in Sudjuradj (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.