Trusić families are Croats and they are mostly from Nova Gradiska area. In the past century, relatively most of Croatian residents bearing this family name were born in Nova Gradiska area and in Zagreb.
Prevalence
About 90 people with faimily name Trusić live in Croatia today, in 40 households. There were 120 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 9 Croatian counties, in 9 cities and 6 other places, mostly in Zagreb (30), Stivica in Nova Gradiska area (30), Slavonski Brod (10), Nova Gradiska (<10), Rijeka (<10), and in Osijek (<10).
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.