Sveti Petar is located in the City of Cres, in Primorje-Gorski Kotar County at an elevation of 240 meters above sea level and it covers the area of 10.86 km² (4.19 sq. miles). According to the 2011 census report, there were only 13 inhabitants. It is entirely populated by Croats. Nearby places: Beli, Dragozetići, Filozići, Važminec, Predošćica, Porozina, Ivanje, Brzac and Milohnići.