In Croatia, Boljar families are Croats (from Duga Resa ), barely Bosniaks (from Duga Resa area ). In the past century, relatively most of Croatian residents bearing this family name were born in Duga Resa and Karlovac.
Prevalence
About 70 people with faimily name Boljar live in Croatia today, in 30 households. There were 70 of them in the middle of the past century, and their number remains constant. They are located in two Croatian counties, threee cities and 5 other places, mostly in Duga Resa (40), Dvorjanci (15), Sica in Duga Resa area (10), Karlovac (<10), and in Orljakovo in Ozalj area (<5).
Outside Croatia
Family name Boljar (including: Bolyar , Boliar ) is present in 6 countries on four continents. "Bolyar " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.