Topčić families are Croats and they are mostly from Nova Gradiska area. According to some sources they are from Omis area. In the past century, relatively most of Croatian residents bearing this family name were born in Nova Gradiska area and in Western Bosnia (Tomislavgrad area). In Podvrško in Nova Gradiska area every eighth inhabitant had the family name Topčić.
Prevalence
About 300 people with faimily name Topčić live in Croatia today, in 120 households. There were 180 of them in the middle of the past century, and their number increased by 70 percent. They are located in almost all Croatian counties, in 31 cities and 27 other places, mostly in Podvrsko in Nova Gradiska area (40), Zagreb (30), Sesvete (20), Ljubitovica in Trogir area (15), and in Split (15).
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Topčić is present in 12 countries on four continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.