Marmilić families are Croats and they are mostly from Opatija area. In the past century, relatively most of Croatian residents bearing this family name were born in Kutina and Rijeka. In Žejane in Opatija area every eighth inhabitant had the family name Marmilić.
Prevalence
About 90 people with faimily name Marmilić live in Croatia today, in 40 households. There were 80 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 12 other places, mostly in Kutina (15), Rijeka (10), Buzet (10), Zagreb (<10), and in Zejane in Opatija area (<10).
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.