Peničići is located in the City of Buzet, in Istra County at an elevation of 290 meters above sea level and it covers the area of 1.38 km² (0.53 sq. miles). According to the 2011 census report, there were 46 inhabitants. It is entirely populated by Croats. Nearby places: Marinci, Pengari, Sveti Donat, Prodani, Podkuk, Juričići, Sveti Ivan, Buzet, Selca and Martinci.