In Croatia, Bizaca families are Croats (from Obrovac ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and Obrovac.
Prevalence
Only a few people with faimily name Bizaca live in Croatia today, in two households only. They are only located in two Croatian cities and two other places, mostly in Trogir (<5), Split (<5), and in Bol (<5) and Postira (<5) on the Island of Brac.
Outside Croatia
Family name Bizaca (including: Bizzaca , Bizazza and Bizaza ) is present in 8 countries worldwide. The family name "Bizaca " is used by small number of 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 2007 in source Encyclopaedia of Croatian Surnames.