Tanzania is administratively divided into thirty-one regions (mkoa).^[1]

• 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.^[1]
• In 2012, four regions were created: Geita, Katavi, Njombe, and Simiyu.^[2]
• In 2016, Songwe Region was created from the western part of Mbeya Region.^[3][4]

List of regions

Tanzania is subdivided into 31 administrative regions.

More information Rank (Area), Region ...

Rank (Area)	Region	Capital	Districts	Area (km2)	Population (2022)[5]	Rank (Population)	Postcode	Map
9	Arusha Region	Arusha	7	37,576 km2 (14,508 sq mi)	2,356,255	11	23xxx
26	Dar es Salaam Region	Dar es Salaam	5	1,393 km2 (538 sq mi)	5,383,728	1	11xxx
8	Dodoma Region	Dodoma	7	41,311 km2 (15,950 sq mi)	3,085,625	5	41xxx
21	Geita Region	Geita	5	20,054 km2 (7,743 sq mi)	2,977,608	7	30xxx
12	Iringa Region	Iringa	5	35,503 km2 (13,708 sq mi)	1,192,728	24	51xxx
16	Kagera Region	Bukoba	8	25,265 km2 (9,755 sq mi)	2,989,299	6	35xxx
6	Katavi Region	Mpanda	3	45,843 km2 (17,700 sq mi)	1,152,958	25	50xxx
10	Kigoma Region	Kigoma	8	25,265 km2 (9,755 sq mi)	2,470,967	9	47xxx
24	Kilimanjaro Region	Moshi	6	13,250 km2 (5,120 sq mi)	1,861,934	18	25xxx
3	Lindi Region	Lindi	6	66,669 km2 (25,741 sq mi)	1,194,028	23	65xxx
7	Manyara Region	Babati	6	44,522 km2 (17,190 sq mi)	1,892,502	17	27xxx
19	Mara Region	Musoma	7	21,760 km2 (8,400 sq mi)	2,372,015	10	31xxx
11	Mbeya Region	Mbeya	7	35,954 km2 (13,882 sq mi)	2,343,754	12	53xxx
31	Mjini Magharibi Region (Zanzibar Urban West)	Zanzibar City	2	230 km2 (89 sq mi)	893,169	26	71xxx
2	Morogoro Region	Morogoro	7	70,624 km2 (27,268 sq mi)	3,197,104	4	67xxx
23	Mtwara Region	Mtwara	7	16,710 km2 (6,450 sq mi)	1,634,947	20	63xxx
25	Mwanza Region	Mwanza	7	9,467 km2 (3,655 sq mi)	3,699,872	2	33xxx
20	Njombe Region	Njombe	6	21,347 km2 (8,242 sq mi)	889,946	27	59xxx
28	Pemba North Region	Wete	2	574 km2 (222 sq mi)	272,091	28	75xxx
30	Pemba South Region	Chake-Chake	2	332 km2 (128 sq mi)	271,350	29	74xxx
13	Pwani Region	Kibaha	7	32,547 km2 (12,566 sq mi)	2,024,947	15	61xxx
18	Rukwa Region	Sumbawanga	4	22,792 km2 (8,800 sq mi)	1,540,519	21	55xxx
4	Ruvuma Region	Songea	6	63,669 km2 (24,583 sq mi)	1,848,794	19	57xxx
22	Shinyanga Region	Shinyanga	5	18,901 km2 (7,298 sq mi)	2,241,299	13	37xxx
17	Simiyu Region	Bariadi	5	25,212 km2 (9,734 sq mi)	2,140,497	14	39xxx
5	Singida Region	Singida	6	49,340 km2 (19,050 sq mi)	2,008,058	16	43xxx
14	Songwe Region	Vwawa	5	27,656 km2 (10,678 sq mi)	1,344,687	22	53xxx
1	Tabora Region	Tabora	7	76,151 km2 (29,402 sq mi)	3,391,679	3	45xxx
15	Tanga Region	Tanga	11	26,667 km2 (10,296 sq mi)	2,615,597	8	21xxx
29	Unguja North Region (Zanzibar North)	Mkokotoni	2	470 km2 (180 sq mi)	257,290	30	73xxx
27	Unguja South Region (Zanzibar South)	Koani	2	854 km2 (330 sq mi)	195,873	31	72xxx

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• Districts of Tanzania
• List of regions of Tanzania by Human Development Index
• List of regions of Tanzania by GDP
• List of regions of Tanzania by poverty rate
• ISO 3166-2:TZ