Šujica families are mainly Serbs and they are mostly from Knin area , whereas often Croats. In the past century, relatively most of Croatian residents bearing this family name were born in Knin area and in Zagreb. In Zrmanja Vrelo in Knin area every second inhabitant had the family name Šujica.
Prevalence
About 70 people with faimily name Šujica live in Croatia today, in 40 households. There were 80 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 9 Croatian counties, in 8 cities and 5 other places, mostly in Zagreb (40), Pula (10), Borovo in Vukovar area (<10), Velika Gorica (<10), and in Krizevci (<5).
Outside Croatia
Family name Šujica is present in this form only in Croatia.
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.