Zanzibar City or Mjini District, often simply referred to as Zanzibar (Wilaya ya Zanzibar Mjini or Jiji la Zanzibar in Swahili) is one of two administrative districts of Mjini Magharibi Region in Tanzania. The district covers an area of 15.4 km2 (5.9 sq mi). The district is comparable in size to the land area of Nauru. The district has a water border to the west by the Indian Ocean. The district is bordered to the east by Magharibi District. The district seat is located in Stonetown. The city is largest city on the island of Zanzibar. It is located on the west coast of Unguja, the main island of the Zanzibar Archipelago, north of the much larger city of Dar es Salaam across the Zanzibar Channel. The city also serves as the capital of the Zanzibar Urban/West Region. In 2012 its population w