Kojčinović families are Serbs and they are mostly from Bosnian Krajina. In the past century, relatively most of Croatian residents bearing this family name were born in Bosnian Krajina (Kotor Varos area) and in Osijek. In Tovladić in Bosnian Krajina every fifth inhabitant had the family name Kojčinović.
Prevalence
About 60 people with faimily name Kojčinović live in Croatia today, in 20 households. There were 40 of them in the middle of the past century, and their number increased by 50 percent. They are only located in four Croatian cities and 6 other places, mostly in Gabos in Vinkovci area (20), Ernestinovo in Osijek area (15), Rijeka (<10), Markusica in Vinkovci area (<5), and in Vukovar (<5).
Outside Croatia
Family name Kojčinović is present in four countries on two continents. The family name "Kojcinovic " 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.