In Croatia, Plantosar families are Croats (from Osijek area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Osijek area. In Jelenjak in Pregrada area every tenth inhabitant had the family name Plantosar.
Prevalence
About 60 people with faimily name Plantosar live in Croatia today, in 30 households. There were 50 of them in the middle of the past century, and their number increased by 40 percent. They are located in 8 Croatian counties, in 8 cities and 8 other places, mostly in Kutina (15), Zagreb (<10), Darda in Osijek area (<10), Kupljensko in Duga Resa area (<10), and in Stipernica (<10).
Outside Croatia
Family name Plantosar is present in four countries on two continents.