In Croatia, Bosjak families are generally Croats (from Pleternica ), very rarely Roms (from Slavonski Brod ). In the past century, relatively most of Croatian residents bearing this family name were born in Slavonski Brod area and in Pozega.
Prevalence
About 50 people with faimily name Bosjak live in Croatia today, in 13 households. There were 20 of them in the middle of the past century, and their number more than doubled. They are located in 6 Croatian counties and 7 other places, mostly in Slavonski Brod (10), Pleternica (<10), Jakacina Mala in Slavonski Brod area (<10), Frkljevci (<10), and in Nova Kapela in Pozega area (<10).