Tanga is a historic city and the capital of Tanga Region. The city is the most northernly port city of Tanzania to the west of the Indian Ocean …Tanga is a historic city and the capital of Tanga Region. The city is the most northernly port city of Tanzania to the west of the Indian Ocean on Tanga Bay. The city has a population of 393,429 in 2022. and is governed by the Tanga City Council. The city is also home to the Port of Tanga. The name Tanga means "sail" in Swahili. The city is also the capital of Tanga District.