In Croatia, Bilić-Erić families are Croats (from Imotski area ). In the past century, relatively most of Croatian residents bearing this family name were born in Imotski area and in Zagreb.
Prevalence
About 30 people with faimily name Bilić-Erić live in Croatia today, in 16 households. There were 10 of them in the middle of the past century, and their number tripled. They are located in threee Croatian counties, threee cities and four other places, mostly in Zagreb (15), Split (15), Varazdin (<10), Zrnovnica (<5), and in Studenci in Imotski area (<5).
Outside Croatia
Family name Bilić-Erić is present in this form only in Croatia.
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.