In Croatia, Firbas families are Croats (from Koprivnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
Only a few people with faimily name Firbas live in Croatia today, in one household only. There were 0 of them in the middle of the past century, and their number remains constant. They are located in only two Croatian places: in Rasinja in Koprivnica area (<10) and Metajna on the Island of Pag (<5).
Outside Croatia
Family name Firbas is present in 12 countries on four continents.