Tankosić families are mainly Serbs and they are mostly from Donji Miholjac area , whereas often Croats (from Nova Gradiska area ). In the past century, relatively most of Croatian residents bearing this family name were born in Donji Miholjac area and in Nova Gradiska area. In Dugopolje in Knin area every third inhabitant had the family name Tankosić.
Prevalence
About 120 people with faimily name Tankosić live in Croatia today, in 50 households. There were 170 of them in the middle of the past century, and their number decreased by 30 percent. They are located in the most of Croatian counties, in 15 cities and 16 other places, mostly in Davor in Nova Gradiska area (35), Sljivosevci in Donji Miholjac area (15), Zagreb (10), Osijek (10), and in Magadenovac in Donji Miholjac area (<10).
Outside Croatia
Family name Tankosić is present in 13 countries on three continents. The family name "Tankosic " is used by small number of people in the United States , small number in Russian Federation , and small number of people in Australia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.
