In Croatia, Milješić families are generally Serbs, very rarely Croats (from Zagreb ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Bosanski Novi area) and in Cazins Region, Bosnia (Bosanska Krupa area).
Prevalence
About 30 people with faimily name Milješić live in Croatia today, in 10 households. There were 40 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties and two other places, mostly in Zagreb (10), Donja Zelina (<10), Vukovar (<10), Drljaca in Hrvatska Kostajnica area (<5), and in Beli Manastir (<5).
Outside Croatia
Family name Milješić 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 1942 in source Phone Directory of the Independent State of Croatia 1942.