Oplanić families are Croats and they are mostly from Pazin area. In the past century, relatively most of Croatian residents bearing this family name were born in Pazin area and in Pazin. In Jakovici in Pazin area every sixth inhabitant had the family name Oplanić.
Prevalence
About 80 people with faimily name Oplanić live in Croatia today, in 40 households. There were 80 of them in the middle of the past century, and their number remains constant. They are only located in in 10 Croatian cities and 14 other places, mostly in Tinjan in Pazin area (15), Porec (10), Brecevici in Pazin area (<10), Rijeka (<10), and in Jakovici in Pazin area (<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.