Blatančić families are Croats and they are mostly from Doboj area , Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Doboj, Bosnia (Doboj area) and in Bosanian Posavina (Derventa area).
Prevalence
About 370 people with faimily name Blatančić live in Croatia today, in 130 households. There were 20 of them in the middle of the past century, and their number multiplied. They are located in the most of Croatian counties, in 26 cities and 36 other places, mostly in Zagreb (45), Slavonski Brod (35), Stari Slatinik in Pleternica area (25), Stitar (15), and in Sibenik (15).
Outside Croatia
Family name Blatančić is present in this form only in Croatia.
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.