Mihailović families are mainly Serbs and they are mostly from Duga Resa area , also Croats (from Karlovac ), very rarely Montenegrins. In the past century, relatively most of Croatian residents bearing this family name were born in Serbia and in Duga Resa area.
Prevalence
About 110 people with faimily name Mihailović live in Croatia today, in 60 households. There were 30 of them in the middle of the past century, and their number more than tripled. They are located in the most of Croatian counties, in 23 cities and 13 other places, mostly in Rijeka (15), Pula (15), Zagreb (10), Karlovac (<10), and in Mali Losinj on the Island of Losinj (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over fifty times, the first time 1749 in source 18th Century Census.