Otok na Dobri is located in the municipality Bosiljevo, in Karlovac County at an elevation of 177 meters above sea level and it covers the area of 6.89 km² (2.66 sq. miles). According to the 2011 census report, there were 58 inhabitants. It is entirely populated by Croats. Nearby places: Trošmarija, Malik, Mateše, Popovo Selo, Grabrk, Gornje Dubrave, Podumol, Soline, Umol and Duga Gora.