In Croatia, Bolonić families are Croats (from the Island of Krk ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Zagreb.
Prevalence
About 30 people with faimily name Bolonić live in Croatia today, in 10 households. There were 40 of them in the middle of the past century, and their number decreased by 30 percent. They are located in two Croatian counties, two cities and 5 other places, mostly in Zagreb (<10), in Krk (<10), Vrbnik (<10) and Malinska (<5) on the Island of Krk, and in Paveki in Bakr area (<5).