In Croatia, Biželj families are generally Croats (from Pozega ), very rarely Czechs (from Daruvar ). In the past century, relatively most of Croatian residents bearing this family name were born in Pozega and Nova Gradiska.
Prevalence
About 30 people with faimily name Biželj live in Croatia today, in 10 households. There were 10 of them in the middle of the past century, and their number tripled. They are located in four Croatian counties, in 6 cities and another small place , mostly in Pozega (<10), Nova Lipa (<10), Zagreb (<5), Nova Gradiska (<5), and in Bjelovar (<5).
Outside Croatia
Family name Biželj (including: Bizelli , Bizelj ) is present in four countries on three continents. "Bizelli " is used by some 700 people in Brazil and about 100 in the United States.