Buhinjak families are Croats and they are mostly from Djurdjevac area. In the past century, relatively most of Croatian residents bearing this family name were born in Lepoglava area and in Djurdjevac area.
Prevalence
About 90 people with faimily name Buhinjak live in Croatia today, in 40 households. There were 40 of them in the middle of the past century, and their number doubled. They are located in 8 Croatian counties, four cities and 16 other places, mostly in Koprivnica (25), Josipovac (15), Meljan in Lepoglava area (15), Borovljani in Djurdjevac area (<10), and in Bakovcica (<10).
Outside Croatia
Family name Buhinjak is present in three countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.