Bitung, officially the City of Bitung, is a coastal city at the north-eastern edge of the island of Sulawesi in Indonesia. Bitung is located in the p…Bitung, officially the City of Bitung, is a coastal city at the north-eastern edge of the island of Sulawesi in Indonesia. Bitung is located in the province of North Sulawesi, and faces Lembeh Island, and the Lembeh Strait, which is known for its colourful marine life, in particular sea slugs. Bitung has a population of 187,932 at the 2010 Census, making it the second most populated city in the province after the capital Manado, rising to 225,134 at the 2020 Census; the official estimate as at mid 2023 was 232,440.