Orešković families are Croats and they are mostly from Otocac. In the past century, relatively most of Croatian residents bearing this family name were born in Otocac and Zagreb. In Ličko Lešće in Otocac every fourth inhabitant had the family name Orešković.
About 2200 people with faimily name Orešković live in Croatia today, in 960 households. There were 2100 of them in the middle of the past century, and their number remains constant. They are located in all Croatian counties, in 69 cities and 164 other places, mostly in Zagreb (555), Licko Lesce (135), Otocac (135), Covici (70), and in Rijeka (70).