Andačić families are Croats and they are mostly from Vrgorac area. According to some sources they are from Mostar area. In the past century, relatively most of Croatian residents bearing this family name were born in Vrgorac area and in Bosanian Posavina (Odzak area).
Prevalence
About 130 people with faimily name Andačić live in Croatia today, in 60 households. There were 50 of them in the middle of the past century, and their number more than doubled. They are located in the most of Croatian counties, in 20 cities and 14 other places, mostly in Zagreb (20), Otric-Seoci in Vrgorac area (10), Slavonski Brod (10), Pula (10), and in Vrgorac (10).
Outside Croatia
Family name Andačić (including: Andacic , Andacich ) is present in five countries on three continents. The family name "Andacic " is used by small number of people in Russian Federation , small number in Australia , and 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 1935 in source Emigration Commission Zagreb.