Podstena is located in the municipality Skrad, in Primorje-Gorski Kotar County at an elevation of 390 meters above sea level and it covers the area of 3.11 km² (1.20 sq. miles). According to the 2011 census report, there were 19 inhabitants. It is predominantly populated by Croats (95%), but also. Nearby places: Veliko Selce, Skrad, Hribac, Podsopalj Belgradski, Podsopalj Drivenički, Divjake, Malo Selce, Planina Skradska, Tusti Vrh and Buzin.