Tanacković families are mainly Serbs and they are mostly from Osijek , whereas often Croats (also from Osijek ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Bosanian Posavina (Brcko area).
Prevalence
About 60 people with faimily name Tanacković live in Croatia today, in 30 households. There were 120 of them in the middle of the past century, and their number halved. They are located in the most of Croatian counties, in 10 cities and 7 other places, mostly in Tenja (25), Osijek (10), Zagreb (<10), Varazdin (<10), and in Koprivnica (<5).
Outside Croatia
Family name Tanacković is present in 10 countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1923 in source Emigration Commission Zagreb.