Zanzibar
Zanzibar (; ; ) is a semi-autonomous region of Tanzania. It is composed of the Zanzibar Archipelago in the Indian Ocean, off the coast of the mainland, and consists of many small islands and two large ones: Unguja (the main island, referred to informally as Zanzibar) and Pemba Island. The capital is Zanzibar City, located on the island of Unguja. Its historic centre is Stone Town, which is a World Heritage Site.
Unguja
As of the 2012 census, the total population of Unguja was 896,721, mostly concentrated in the Zanzibar urban region. The main settlement on the island is Zanzibar City, which serves as a capital for Zanzibar and which includes the renowned historical city of Stone Town as well as other populated areas such as Michenzani. Other major settlements on Unguja include Mbweni, Mangapwani, Chwaka, and Nungwi.