Administrative divisions of Tanzania
Tanzania is divided into 30 first-level administrative divisions:
Largest cities in Tanzania
| # | City | Population |
|---|---|---|
| 1 | Dar es Salaam | 5,383,728 |
| 2 | Mwanza | 1,104,521 |
| 3 | DodomaCapital | 765,179 |
| 4 | Zanzibar | 709,809 |
| 5 | Arusha | 617,631 |
| 6 | Mbeya | 541,603 |
| 7 | Morogoro | 471,409 |
| 8 | Kahama | 453,654 |
| 9 | Tanga | 393,429 |
| 10 | Geita | 318,006 |
Dar es Salaam is the largest city in Tanzania with about 5,383,728 people; the capital, Dodoma, has about 765,179. All 32 largest cities of Tanzania β
Terrain, rivers & lakes
Highest terrain in Tanzania: β 5,883 m β read from the global elevation model, so summit heights are approximate. The physical map paints elevation bands from green lowlands to brown highlands.
π Rivers
- Wami
- Igombe
- Gombe
- Ruvuma
- Rusizi
- Pangani
- Luwegu
- Rufiji
- Lukuga
- Kagera
- Great Ruaha
- Shama
- Malagarasi
- Ugalla
- Rungwa
ποΈ Lakes
- Lake Malawi
- Lake Tanganyika
- Lake Victoria
- Lake Rukwa
- Lake Manyara
- Lake Lembeni
- Lake Eyasi
- Lake Natron
Ethnic groups in Tanzania
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 African
Regionally, mainland - African is the most common ethnic group across most of the 30 divisions.
Source: CIA World Factbook Β· regional dominance compiled by Glostats from censuses and surveys
Religions in Tanzania
Christian 63.1%, Muslim 34.1%, folk religion 1.1%, Buddhist <1%, Hindu <1%, Jewish <1%, other <1%, unspecified 1.6% (2020 est.)
Regionally, Christian is the most common religious group across most of the 30 divisions, while Muslim predominates in 10 divisions (Zanzibar South and Central, Kaskazini-Unguja, Zanzibar West, Kusini-Pemba, Kaskazini-Pemba, Pwani, β¦).
Source: CIA World Factbook (2020 est.) Β· regional dominance compiled by Glostats from censuses and surveys
Languages in Tanzania
Kiswahili or Swahili (official), Kiunguja (name for Swahili in Zanzibar), English (official, primary language of commerce, administration, and higher education), Arabic, many local languages
Regionally, Swahili is the most common language group across most of the 30 divisions.
Source: CIA World Factbook Β· regional dominance compiled by Glostats from censuses and surveys
Explore more
Sources: boundaries, cities, rivers and lakes from Natural Earth (public domain, 1:10m); elevation from the AWS Open Data terrain tiles (SRTM/GMTED); ethnic, religious and language shares from the CIA World Factbook; regional dominance compiled by Glostats from national censuses and surveys. Page generated 2026-10-20. More about our data.