Augustić families are Croats and they are mostly from Petrinja. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Cakovec. In Golenić in Slatina every thirtieth inhabitant had the family name Augustić.
Prevalence
About 80 people with faimily name Augustić live in Croatia today, in 50 households. There were 170 of them in the middle of the past century, and their number halved. They are located in 8 Croatian counties, in 11 cities and threee other places, mostly in Zagreb (45), Mursko Sredisce (10), Petrinja (<10), Cakovec (<10), and in Velika Gorica (<10).
Outside Croatia
Family name Augustić is present in three countries on two continents. The family name "Augustic " is used by few 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.