Bihar families are Croats and they are mostly from Prelog area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Prelog area.
Prevalence
About 110 people with faimily name Bihar live in Croatia today, in 40 households. There were 70 of them in the middle of the past century, and their number increased by 40 percent. They are only located in four Croatian cities and 11 other places, mostly in Zagreb (55), Slatina (15), Dekanovec in Prelog area (10), Prelog (<10), and in Donji Kraljevec in Prelog area (<10).
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.