Kljenak is located in the City of Vrgorac, in Split-Dalmatia County at an elevation of 270 meters above sea level and it covers the area of 8.62 km² (3.33 sq. miles). According to the 2011 census report, there were 82 inhabitants. It is entirely populated by Croats. Nearby places: Višnjica, Ravča, Duge Njive, Kokorići, Dragljane, Drvenik, Zavojane, Zaostrog, Kotezi and Vlaka.