Duge Njive is located in the City of Vrgorac, in Split-Dalmatia County at an elevation of 450 meters above sea level and it covers the area of 68.01 km² (26.26 sq. miles). According to the 2011 census report, there were 106 inhabitants. It is predominantly populated by Croats (99%), but also. Nearby places: Dragljane, Vlaka, Kljenak, Živogošće, Zavojane, Kozica, Gornje Igrane, Drvenik, Višnjica and Igrane.