Ivačić families are Croats and they are mostly from Ivanec area. According to some sources they are from middle Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Split and Sinj.
Prevalence
About 210 people with faimily name Ivačić live in Croatia today, in 80 households. There were 170 of them in the middle of the past century, and their number increased by 20 percent. They are located in the most of Croatian counties, in 14 cities and 24 other places, mostly in Glavice (25), Zagreb (20), Split (15), Koprivnica (15), and in Osijek (15).
Outside Croatia
Family name Ivačić is present in 9 countries on three continents. The family name "Ivacic " is used by some 100 people in the United States and small number in Belgium.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.