In Croatia, Boško families are Croats (from the Island of Ugljan ). In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Ugljan and in Zadar.
Prevalence
About 40 people with faimily name Boško live in Croatia today, in 19 households. There were 30 of them in the middle of the past century, and their number increased by 40 percent. They are located in 7 Croatian counties, four cities and 5 other places, mostly in Kukljica on the Island of Ugljan (20), Zagreb (<10), Zadar (<10), Rijeka (<5), and in Baska Voda in Makarska area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1924 in source Emigration Commission Zagreb.