mainland - Christian 30%, Muslim 35%, indigenous beliefs 35%; Zanzibar - more than 99% Muslim
Christian 53% (Methodist 34.5%, Roman Catholic 7.2%, Assembly of God 3.8%, Seventh Day Adventist 2.6%, other 4.9%), Hindu 34% (Sanatan 25%, Arya Samaj 1.2%, other 7.8%), Muslim 7% (Sunni 4.2%. other 2.8%), other or unspecified 5.6%, none 0.3% (1996 census)
Languages
Kiswahili or Swahili (official), Kiunguja (name for Swahili in Zanzibar), English (official, primary language of commerce, administration, and higher education), Arabic (widely spoken in Zanzibar), many local languages note: Kiswahili (Swahili) is the mother tongue of the Bantu people living in Zanzibar and nearby coastal Tanzania; although Kiswahili is Bantu in structure and origin, its vocabulary draws on a variety of sources including Arabic and English; it has become the lingua franca of central and eastern Africa; the first language of most people is one of the local languages
