Podstene is located in the City of Čabar, in Primorje-Gorski Kotar County at an elevation of 405 meters above sea level and it covers the area of 0.58 km² (0.22 sq. miles). According to the 2011 census report, there were 17 inhabitants. It is entirely populated by Croats. Nearby places: Fažonci, Zamost, Požarnica, Smrekari, Plešce, Hrvatsko, Kamenski Hrib, Mali Lug, Hrib and Smrečje.