Bliznac families are Croats and they are mostly from middle Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Derventa area) and in Middle Bosnia (Jajce area). In Bunar in Bosanian Posavina every sixth inhabitant had the family name Bliznac.
Prevalence
About 290 people with faimily name Bliznac live in Croatia today, in 90 households. There were 10 of them in the middle of the past century, and their number multiplied. They are located in 8 Croatian counties, in 20 cities and 24 other places, mostly in Bukovec Zelinski (40), Zagreb (35), Djakovo (30), Selci Djakovacki (25), and in Ivanovo Polje in Daruvar area (20).
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.