Dupelj families are Croats and they are mostly from Donja Stubica. In the past century, relatively most of Croatian residents bearing this family name were born in Donja Stubica and Zagreb.
Prevalence
About 80 people with faimily name Dupelj live in Croatia today, in 30 households. There were 90 of them in the middle of the past century, and their number decreased by 10 percent. They are located in threee Croatian counties, threee cities and 6 other places, mostly in Zagreb (30), Gornja Podgora (25), Milekovo Selo (<10), Matenci (<10), and in Daruvar (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.