In Croatia, Milešić families are generally Croats (from Ivanec area ), barely Bosniaks (from Vrbovec ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Tuzla Region, Bosnia (Tuzla area) and in Middle Bosnia (Zenica area).
Prevalence
About 50 people with faimily name Milešić live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number increased by 40 percent. They are located in the most of Croatian counties, in 12 cities and 8 other places, mostly in Zagreb (<10), Zlogonje (<10), Klenovnik in Ivanec area (<10), Trogir (<10), and in Kutina (<5).
Outside Croatia
Family name Milešić (including: Milesic , Mileshich and Milesich ) is present in 9 countries on three continents. The family name "Milesic " is used by some 80 people in the United States , small number in Sweden , and small number of people in Canada.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1930 in source Emigration Commission Zagreb.