Radmilo families are Croats and they are mostly from Sinj area. In the past century, relatively most of Croatian residents bearing this family name were born in Sinj area and in Split. In Ramljane in Sinj area every seventh inhabitant had the family name Radmilo.
Prevalence
About 150 people with faimily name Radmilo live in Croatia today, in 60 households. There were 100 of them in the middle of the past century, and their number increased by 50 percent. They are only located in in 8 Croatian cities and 10 other places, mostly in Split (80), Solin (20), Knin (<5), Kastel Gomilica (<5), and in Stobrec (<5).
Outside Croatia
Family name Radmilo is present in 6 countries on three continents.
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.