Basa families are Croats and they are mostly from Benkovac area. In the past century, relatively most of Croatian residents bearing this family name were born in Benkovac area and in Zadar.
Prevalence
About 140 people with faimily name Basa live in Croatia today, in 60 households. There were 80 of them in the middle of the past century, and their number increased by 90 percent. They are located in 10 Croatian counties, in 15 cities and 12 other places, mostly in Rovanjska (20) and Jasenice (10) in Benkovac area, Zagreb (<10), Bregana (<10), and in Cres on the Island of Cres (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1691 in source Catholic Church Parish Records.