Veli Mlun is located in the City of Buzet, in Istra County at an elevation of 249 meters above sea level and it covers the area of 3.45 km² (1.33 sq. miles). According to the 2011 census report, there were 63 inhabitants. It is predominantly populated by Croats (93%), but also Slovenes (7%). Nearby places: Podrebar, Mali Mlun, Sovinjak, Žonti, Škuljari, Mala Huba, Sveti Donat, Kajini, Pračana and Sovinjsko Polje.