Brnardić families are Croats and they are mostly from Duga Resa area. In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and in Duga Resa area.
Prevalence
About 120 people with faimily name Brnardić live in Croatia today, in 50 households. There were 120 of them in the middle of the past century, and their number remains constant. They are only located in in 8 Croatian cities and 16 other places, mostly in Karlovac (25), Zagreb (20), Banjsko Selo in Duga Resa area (10), Lijevi Degoj in Glina area (10), and in Staro Pracno (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.