Sapina Doca is located in the municipality Rogoznica, in Šibenik-Knin County at an elevation of 100 meters above sea level and it covers the area of 12.42 km² (4.80 sq. miles). According to the 2011 census report, there were 66 inhabitants. It is predominantly populated by Croats (99%), but also. Nearby places: Ložnice, Ložnice, Jarebinjak, Podglavica, Podorljak, Kruševo, Vadalj, Vezac, Široke and Svinca.