In Croatia, Plosnić families are Croats (from Split ). In the past century, relatively most of Croatian residents bearing this family name were born in Split.
Prevalence
About 60 people with faimily name Plosnić live in Croatia today, in 17 households. There were 40 of them in the middle of the past century, and their number increased by 40 percent. They are located in threee Croatian counties and two other places, mostly in Stobrec (30), Split (15), Solin (10), Podstrana in Solin area (<5), and in Zagreb (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1936 in source Emigration Commission Zagreb.