The region covers an area of 230 km2 (89 sq mi).

[4] The region is located entirely on the island of Zanzibar and bordered to the west by the Indian Ocean, north by Unguja North Region and the east by Unguja South Region.

The region is home to one of the seven World Heritage Sites located in Tanzania, namely; Stonetown of Zanzibar.

[7] Mjini Magharibi Region is divided into two districts, each administered by a council: For parliamentary elections, Tanzania is divided into constituencies.

As of the 2010 elections Zanzibar Urban/West Region had nineteen constituencies:[8]