In Croatia, Boros families are almost entirely Croats (from Middle Bosnia ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Tesanj area) and in Middle Bosnia (Zavidovici area). In Tugovići in Middle Bosnia every fifth inhabitant had the family name Boros.
Prevalence
About 60 people with faimily name Boros live in Croatia today, in 20 households. There were 10 of them in the middle of the past century, and their number multiplied. They are located in 10 Croatian counties, in 12 cities and 8 other places, mostly in Vinkovci (20), Trogir (15), Rijeka (<10), Valpovo (<10), and in Sesvete (<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.