In Croatia, Trcović families are almost entirely Croats (from Donji Miholjac area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Donji Miholjac area and in Nasice.
Prevalence
About 50 people with faimily name Trcović live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties, in 7 cities and 5 other places, mostly in Osijek (15), Donji Miholjac (10), Zagreb (<10), Nasice (<10), and in Vukovar (<5).
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.