In Croatia, Filjar families are Croats (from Djurdjevac area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar area and in Djurdjevac.
Prevalence
About 20 people with faimily name Filjar live in Croatia today, in 9 households. There were 20 of them in the middle of the past century, and their number remains constant. They are only located in in 7 Croatian cities and two other places, mostly in Kalinovac in Djurdjevac area (<10), Zagreb (<5), Pula (<5), Koprivnica (<5), and in Bjelovar (<5).
Outside Croatia
Family name Filjar (including: Filyar , Filiar ) is present in 7 countries on three continents. "Filiar " is used by small number of people in the United States.