Benja families are Croats and they are mostly from Sinj. In the past century, relatively most of Croatian residents bearing this family name were born in Sinj and Split.
Prevalence
About 90 people with faimily name Benja live in Croatia today, in 30 households. There were 60 of them in the middle of the past century, and their number increased by 70 percent. They are only located in in 6 Croatian cities and 5 other places, mostly in Brnaze (55), Sinj (10), Ilok (<10), Split (<10), and in Zagreb (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.