In Croatia, Pošić families are Croats (from Pula area ). In the past century, relatively most of Croatian residents bearing this family name were born in Opatija area and in Pula area.
Prevalence
Only a few people with faimily name Pošić live in Croatia today, in four households only. There were 20 of them in the middle of the past century, and their number halved. They are only located in in one Croatian city and another small place , mostly in Medulin in Pula area (<5) and Pula (<5).
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.