In Croatia, Dujo families are almost entirely Croats (from Middle Bosnia ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Maglaj area) and in Middle Bosnia (Novi Travnik area).
Prevalence
About 70 people with faimily name Dujo live in Croatia today, in 30 households. They are located in 9 Croatian counties, in 12 cities and 8 other places, mostly in Grubisno Polje (10), Sesvete (<10), Suhopolje in Virovitica area (<10), Zagreb (<10), and in Trogir (<10).