Kubica families are predominantly Croats and they are mostly from Nasice area , less frequently Slovaks (from Nasice ). In the past century, relatively most of Croatian residents bearing this family name were born in Nasice and Orahovica.
Prevalence
About 120 people with faimily name Kubica live in Croatia today, in 50 households. There were 100 of them in the middle of the past century, and their number increased by 20 percent. They are located in 7 Croatian counties, in 12 cities and 15 other places, mostly in Nasice (20), Breznica Nasicka in Nasice area (15), Bracevci in Djakovo area (10), Donja Moticina in Nasice area (10), and in Vinkovci (<10).
Outside Croatia
Family name Kubica (including: Kubitza , Kubiza ) is present in 30 countries worldwide. "Kubitza " is used by some 2000 people in Germany , about 200 in Brazil , and some 200 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.