Trupec families are Croats and they are mostly from Klanjec. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Klanjec.
Prevalence
About 90 people with faimily name Trupec live in Croatia today, in 40 households. There were 150 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 7 Croatian counties, in 13 cities and 8 other places, mostly in Zagreb (20), Tomasevec (15), Luka in Oroslavje area (15), Dugo Selo (<10), and in Sesvete (<10).
Outside Croatia
Family name Trupec is present in three countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.