Deželjin families are Croats and they are mostly from the Island of Rab. In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Rab and in Rijeka.
Prevalence
About 130 people with faimily name Deželjin live in Croatia today, in 60 households. There were 120 of them in the middle of the past century, and their number increased by 10 percent. They are only located in in 8 Croatian cities and 7 other places, mostly in Barbat na Rabu (55) and Kampor (35) on the Island of Rab, Zagreb (15), Rijeka (<10), and in Palit on the Island of Rab (<10).
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.