# Regions of Tanzania

Tanzania is administratively divided into thirty-one regions (mkoa).

## History

* In 1975, Tanzania had 25 regions. In the 1970s, the name of the Ziwa Magharibi Region (West Lake Region) changed to Kagera Region.
* In 2002, Manyara Region was created out of part of Arusha Region.
* In 2012, four regions were created: Geita, Katavi, Njombe, and Simiyu.
* In 2016, Songwe Region was created from the western part of Mbeya Region.

### List of regions

Tanzania is subdivided into 31 administrative regions.
| Rank (Area) | Region | Capital | Districts | Area (km$^2$) | Population (2022) | Rank (Population) | Postcode |
| 9 | Arusha Region | Arusha | 7 | 37,576 km$^2$ (14,508 sq mi) | 2,356,255 | 11 | 23xxx |
| 26 | Dar es Salaam Region | Dar es Salaam | 5 | 1,393 km$^2$ (538 sq mi) | 5,383,728 | 1 | 11xxx |
| 8 | Dodoma Region | Dodoma | 7 | 41,311 km$^2$ (15,950 sq mi) | 3,085,625 | 5 | 41xxx |
| 21 | Geita Region | Geita | 5 | 20,054 km$^2$ (7,743 sq mi) | 2,977,608 | 7 | 30xxx |
| 12 | Iringa Region | Iringa | 5 | 35,503 km$^2$ (13,708 sq mi) | 1,192,728 | 24 | 51xxx |
| 16 | Kagera Region | Bukoba | 8 | 25,265 km$^2$ (9,755 sq mi) | 2,989,299 | 6 | 35xxx |
| 6 | Katavi Region | Mpanda | 3 | 45,843 km$^2$ (17,700 sq mi) | 1,152,958 | 25 | 50xxx |
| 10 | Kigoma Region | Kigoma | 8 | 25,265 km$^2$ (9,755 sq mi) | 2,470,967 | 9 | 47xxx |
| 24 | Kilimanjaro Region | Moshi | 6 | 13,250 km$^2$ (5,120 sq mi) | 1,861,934 | 18 | 25xxx |
| 3 | Lindi Region | Lindi | 6 | 66,669 km$^2$ (25,741 sq mi) | 1,194,028 | 23 | 65xxx |
| 7 | Manyara Region | Babati | 6 | 44,522 km$^2$ (17,190 sq mi) | 1,892,502 | 17 | 27xxx |
| 19 | Mara Region | Musoma | 7 | 21,760 km$^2$ (8,400 sq mi) | 2,372,015 | 10 | 31xxx |
| 11 | Mbeya Region | Mbeya | 7 | 35,954 km$^2$ (13,882 sq mi) | 2,343,754 | 12 | 53xxx |
| 31 | Mjini Magharibi Region (Zanzibar Urban West) | Zanzibar City | 2 | 230 km$^2$ (89 sq mi) | 893,169 | 26 | 71xxx |
| 2 | Morogoro Region | Morogoro | 7 | 70,624 km$^2$ (27,268 sq mi) | 3,197,104 | 4 | 67xxx |
| 23 | Mtwara Region | Mtwara | 7 | 16,710 km$^2$ (6,450 sq mi) | 1,634,947 | 20 | 63xxx |
| 25 | Mwanza Region | Mwanza | 7 | 9,467 km$^2$ (3,655 sq mi) | 3,699,872 | 2 | 33xxx |
| 20 | Njombe Region | Njombe | 6 | 21,347 km$^2$ (8,242 sq mi) | 889,946 | 27 | 59xxx |
| 28 | Pemba North Region | Wete | 2 | 574 km$^2$ (222 sq mi) | 272,091 | 28 | 75xxx |
| 30 | Pemba South Region | Chake-Chake | 2 | 332 km$^2$ (128 sq mi) | 271,350 | 29 | 74xxx |
| 13 | Pwani Region | Kibaha | 7 | 32,547 km$^2$ (12,566 sq mi) | 2,024,947 | 15 | 61xxx |
| 18 | Rukwa Region | Sumbawanga | 4 | 22,792 km$^2$ (8,800 sq mi) | 1,540,519 | 21 | 55xxx |
| 4 | Ruvuma Region | Songea | 6 | 63,669 km$^2$ (24,583 sq mi) | 1,848,794 | 19 | 57xxx |
| 22 | Shinyanga Region | Shinyanga | 5 | 18,901 km$^2$ (7,298 sq mi) | 2,241,299 | 13 | 37xxx |
| 17 | Simiyu Region | Bariadi | 5 | 25,212 km$^2$ (9,734 sq mi) | 2,140,497 | 14 | 39xxx |
| 5 | Singida Region | Singida | 6 | 49,340 km$^2$ (19,050 sq mi) | 2,008,058 | 16 | 43xxx |
| 14 | Songwe Region | Vwawa | 5 | 27,656 km$^2$ (10,678 sq mi) | 1,344,687 | 22 | 53xxx |
| 1 | Tabora Region | Tabora | 7 | 76,151 km$^2$ (29,402 sq mi) | 3,391,679 | 3 | 45xxx |
| 15 | Tanga Region | Tanga | 11 | 26,667 km$^2$ (10,296 sq mi) | 2,615,597 | 8 | 21xxx |
| 29 | Unguja North Region (Zanzibar North) | Mkokotoni | 2 | 470 km$^2$ (180 sq mi) | 257,290 | 30 | 73xxx |
| 27 | Unguja South Region (Zanzibar South) | Koani | 2 | 854 km$^2$ (330 sq mi) | 195,873 | 31 | 72xxx |