Dubelj families are Croats and they are mostly from east Herzegovina. In the past century, relatively most of Croatian residents bearing this family name were born in East Herzegovina (Trebinje area) and in Dubrovnik. In Kijev Do in East Herzegovina every third inhabitant had the family name Dubelj.
Prevalence
About 70 people with faimily name Dubelj live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number more than doubled. They are located in threee Croatian counties, threee cities and 11 other places, mostly in Mokosica (30), Dubrovnik (15), Orasac (<10), Kolocep (<10), and in Rozat (<10).
Outside Croatia
Family name Dubelj (including: Dubelly , Dubeli and Dubbelli ) is present in 10 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1923 in source Emigration Commission Zagreb.