Senjanin families are Croats and they are mostly from Trogir area. In the past century, relatively most of Croatian residents bearing this family name were born in Trogir and in Trogir area. In Svinca in Trogir area every second inhabitant had the family name Senjanin.
Prevalence
About 110 people with faimily name Senjanin live in Croatia today, in 40 households. There were 60 of them in the middle of the past century, and their number increased by 70 percent. They are located in four Croatian counties, in 7 cities and 5 other places, mostly in Svinca in Trogir area (45), Zagreb (15), Solin (15), Trogir (10), and in Split (10).
Outside Croatia
Family name Senjanin is present in four countries on two continents. The family name "Senjanin " 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 over five times, the first time 2007 in source Encyclopaedia of Croatian Surnames.