Indicator	Value
Total population	68,600,000 peopleUN DESA WPP [2024] 68,560,000 people·World Bank WDI [2024] 68,560,000 people
Median age	17.4 yearsUN DESA WPP [2024]
Life expectancy	67–67.2 yearsWorld Bank WDI [2024] 67.21 years·UNDP HDI [2023] 67 years
Ethnic groups	mainland - African 99% (of which 95% are Bantu consisting of more than 130 tribes), other 1% (consisting of Asian, European, and Arab); Zanzibar - Arab, African, mixed Arab and AfricanCIA World Factbook [2025] · 2026 archive
Languages	Kiswahili or Swahili (official), Kiunguja (name for Swahili in Zanzibar), English (official, primary language of commerce, administration, and higher education), Arabic, many local languagesCIA World Factbook [2025] · 2026 archive
Religions	Christian 63.1%, Muslim 34.1%, folk religion 1.1%, Buddhist <1%, Hindu <1%, Jewish <1%, other <1%, unspecified 1.6% (2020 est.); note: Zanzibar is almost entirely MuslimCIA World Factbook [2025] · 2026 archive
Urbanization	37.4% of total population (2023)CIA World Factbook [2025] · 2026 archive
Population growth	2.87 %World Bank WDI [2024]
Birth rate	34.8 per 1,000World Bank WDI [2024]
Death rate	5.72 per 1,000World Bank WDI [2024]
Urban population	36.2 %World Bank WDI [2024]
Languages (structured)	Aasax Akie Alagwa Aramanik Arusha Asu (Tanzania) Barabayiiga-Gisamjanga Bembe Bena (Tanzania) Bende Biyanjiida Bondei Bungu Buraadiga Burunge Cutchi-Swahili Dhaiso Digo Doe Duruma Fipa Gogo Gorowa Gusii Gweno Ha Hadza Hamba NW of Nachingwea south of Mbemkuru River Hangaza Haya Hehe Ikizu Ikoma-Nata Iraqw Isanzu Isenye Isimjeega-Rootigaanga Jita Kabwa Kagulu Kahe Kakesio Dorobo Kami (Tanzania) Kara (Tanzania) Kerewe Kimbu Kinga Kinyarwanda Kisankasa Kisi Konongo-Ruwila Kuria Kutu Kw'adza Kwaya Kwere Lambya Langi Logooli Luguru Luo (Kenya and Tanzania) Machame Machinga Magoma Makhuwa-Meetto Makonde Makwe Malila Mambwe-Lungu Manda-Matumba Masai Matengo Matumbi Mbugu Mbugwe Mbunga Mediak Mochi Mpoto Mwera (Chimwera) Mwera (Nyasa) Ndali Ndamba Ndendeule Ndengereko Ndonde Hamba Ndwewe Ngasa Ngindo Ngoreme Ngulu Nilamba Nindi Nyakyusa-Ngonde Nyambo Nyamwanga Nyamwezi Nyanja Nyankole Nyaturu Nyiha (Malawi) Nyiha (Tanzania) Nyika (Tanzania) Okiek Pangwa Pimbwe Pogolo Rombo Rufiji Rundi Rungwa Rwa Safwa Sagala Sandawe Sangu (Tanzania) Segeju Serengeti Dorobo Shambala Shubi Standard Arabic Suba Suba-Simbiti Sukuma Sumbwa Swahili Taita Tanzanian Ngoni Tanzanian Sign Language Taveta Temi Tongwe Vidunda Vinza Vunjo Vwanji Wanda Ware Yao Zanaki Zaramo Zigula-Mushungulu Zinza Glottolog [2026]