Bolanča families are Croats and they are mostly from Sibenik area , where they immigrated according to some sources from Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Sibenik and in Sibenik area.
Prevalence
About 530 people with faimily name Bolanča live in Croatia today, in 230 households. There were 300 of them in the middle of the past century, and their number increased by 80 percent. They are located in the most of Croatian counties, in 25 cities and 20 other places, mostly in Zagreb (145), Split (90), Sibenik (70), Primosten in Sibenik area (65), and in Rijeka (25).
Outside Croatia
Family name Bolanča is present in 7 countries on three continents. The family name "Bolanca " is used by small number of people in the United States , small number in Germany , and small number of people in Australia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 2007 in source Encyclopaedia of Croatian Surnames.