Boromisa families are mainly Serbs and they are mostly from Glina , whereas often Croats (also from Glina ). In the past century, relatively most of Croatian residents bearing this family name were born in Glina and Zagreb. In Brestik in Glina every third inhabitant had the family name Boromisa.
Prevalence
About 90 people with faimily name Boromisa live in Croatia today, in 50 households. There were 230 of them in the middle of the past century, and their number decreased significantly. They are located in 9 Croatian counties, in 8 cities and 12 other places, mostly in Zagreb (40), Brestik (30), Borovo in Vukovar area (<10), Batinjani in Daruvar area (<10), and in Vukovar (<5).
Outside Croatia
At least three families with this surname emigrated from Croatia to: the United States (1), Australia (1), and to Sweden (1). Family name Boromisa (including: Boromisza , Boromissza ) is present in 8 countries on three continents. The family name "Boromisa " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.