In Croatia, Miljko families are Croats (from Makarska area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Gradacac area) and in Herzegovina (Mostar area).
Prevalence
About 20 people with faimily name Miljko live in Croatia today, in 14 households. There were 0 of them in the middle of the past century, and their number multiplied. They are only located in in 9 Croatian cities and 6 other places, mostly in Zagreb (<10), Podgora in Makarska area (<5), Stilja (<5), Metkovic (<5), and in Hvar on the Island of Hvar (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.