Trojanović families are Croats and they are mostly from Dubrovnik. In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik and on the Island of Korcula.
Prevalence
About 90 people with faimily name Trojanović live in Croatia today, in 40 households. There were 110 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 8 Croatian counties, in 6 cities and 15 other places, mostly in Trsteno (20), Dubrovnik (15), Vela Luka on the Island of Korcula (10), and in Palje Brdo (10) and Cavtat (<10) in Dubrovnik area.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1925 in source Emigration Commission Zagreb.