Iran is subdivided into thirty ostanha (singular ostan: provinces), each governed from a local center, usually the largest local city. The provincial authority is headed by a governor (استاندار: ostāndār), who is appointed by the Minister of the Interior subject to approval of the cabinet.
Until 1950, Iran was divided into twelve provinces: Ardelan, Azarbaijan, Baluchestan, Farsistan, Gilan, Irak Ajami, Khorasan, Khoristan, Kerman, Larestan, Lorestan, and Mazandaran. In 1950, Iran was reorganized to form ten numbered provinces with subordinate governorates: Gilan; Mazandaran; East Azarbaijan; West Azarbaijan; Kermanshah; Khuzestan; Fars; Kerman; Khorasan; Isfahan. From 1960 to 1981 the governorates were raised to provincial status one by one. Since then several new provinces have been created, most recently in 2004 when the province of Khorasan was split into three new provinces. The provinces are subdivided into 324 shahrestans.
| No.
| Province
| Capital
| Area(km²)
| Population
| Density (people/km²)
| Shahrestans
|
| 1 | Tehran[Until 1986, Tehran was part of Markazi province.]
| Tehran | 18,814 | 12,150,742 | 645.8 | 13
|
| 2 | Qom[Until 1995, Qom was a shahrestan of Tehran province.] | Qom | 11,526 | 1,064,456 | 92.4 | 1
|
| 3 | Markazi[Originally part of Mazandaran province.][In 1986, some parts of Markazi province were transferred to Isfahan, Semnan, and Zanjan provinces.] | Arak | 29,130 | 1,361,394 | 46.7 | 10
|
| 4 | Qazvin[On 1996-12-31, the shahrestans of Qazvin and Takestan were separated from Zanjan province to form the province of Qazvin.] | Qazvin | 15,549 | 1,166,861 | 75.0 | 5
|
| 5 | Gilan | Rasht | 14,042 | 2,410,523 | 171.7 | 16
|
| 6 | Ardabil[Until 1993, Ardabil was part of East Azarbaijan province.] | Ardabil | 17,800 | 1,257,624 | 70.7 | 9
|
| 7 | Zanjan[Originally part of Gilan province.] | Zanjan | 21,773 | 970,946 | 44.6 | 7
|
| 8 | East Azarbaijan | Tabriz | 45,650 | 3,500,183 | 76.7 | 19
|
| 9 | West Azarbaijan | Urmia[Until 1979, the city was known as Rezaiyeh.] | 37,437 | 2,949,426 | 78.8 | 14
|
| 10 | Kurdistan | Sanandaj | 29,137 | 1,574,118 | 54.0 | 9
|
| 11 | Hamedan/Hamadan[Originally part of Kermanshah province.] | Hamedan/Hamadan | 19,368 | 1,738,772 | 89.8 | 8
|
| 12 | Kermanshah[Between 1979 and 1995 Kermanshah province and its capital, were both known as Bakhtaran.]
| || Kermanshah ||style="text-align:right"| 24,998||style="text-align:right"| 1,938,060||style="text-align:right"| 77.5||style="text-align:right"|13
| 13 | Ilam | Ilam | 20,133 | 545,093 | 27.1 | 7
|
| 14 | Lorestan[Originally part of Khuzestan province.] | Khorramabad | 28,294 | 1,758,628 | 62.2 | 9
|
| 15 | Khuzestan | Ahvaz | 64,055 | 4,345,607 | 67.8 | 18
|
| 16 | Chahar Mahaal and Bakhtiari[Originally part of Isfahan province.] | Shahr-e-Kord | 16,332 | 842,002 | 51.6 | 6
|
| 17 | Kohkiluyeh and Buyer Ahmad[Yasuj ] | 15,504 | 695,099 | 44.8 | 5
|
| 18 | Bushehr[Originally part of Fars province. Until 1977, the province was known as Khalij-e Fars (Persian Gulf).] | Bushehr | 22,743 | 816,115 | 35.9 | 9
|
| 19 | Fars | Shiraz | 122,608 | 4,385,869 | 35.8 | 23
|
| 20 | Hormozgan[Originally part of Kerman province. Until 1977, the province was known as Banader va Jazayer-e Bahr-e Oman (Ports and Islands of the Sea of Oman).][Hormozgan includes several islands such as Qeshm, Lavan, Kish and Hormoz as well as Abu Musa island which is jointly administered by Iran and the United Arab Emirates.] | Bandar Abbas | 70,669 | 1,314,667 | 18.6 | 11
|
| 21 | Sistan and Baluchistan[Until 1986, the province was known as Baluchestan and Sistan.]
| || Zahedan ||style="text-align:right"| 181,785||style="text-align:right"| 2,290,076||style="text-align:right"| 12.6||style="text-align:right"|8
| 22 | Kerman | Kerman | 180,836 | 2,432,927 | 13.5 | 14
|
| 23 | Yazd[In 1986, part of Kerman province was transferred to Yazd province. In 2002, Tabas shahrestan (area: 55,344 km²) was transferred from Khorasan province to Yazd.] | Yazd | 129,285 | 958,318 | 7.4 | 10
|
| 24 | Isfahan | Isfahan | 107,029 | 4,454,595 | 41.6 | 21
|
| 25 | Semnan | Semnan | 97,491 | 589,512 | 6.0 | 4
|
| 26 | Mazandaran | Sari | 23,701 | 2,818,831 | 118.9 | 15
|
| 27 | Golestan[On 1997-05-31, the shahrestans of Aliabad, Gonbad-e-kavus, Gorgan, Kordkuy, Minudasht, and Torkaman were separated from Mazandaran province to form Golestan province.] | Gorgan | 20,195 | 1,637,063 | 81.1 | 11
|
| 28 | North Khorasan[On 2004-09-29, Khorasan was divided into three provinces. North Khorasan; Razavi Khorasan; South Khorasan.] | Bojnourd | 28,434 | 786,918 | 27.7 | 6
|
| 29 | Razavi Khorasan | Mashhad | 144,681 | 5,202,770 | 36.0 | 19
|
| 30 | South Khorasan | Birjand | 69,555 | 510,218 | 7.3 | 4
|
|
| Iran
| Tehran
| 68,467,413
| 1,628,554
| 42.0
| 324
|
See also
References and notes
External links
Geography of Iran | Lists of subnational entities | Provinces of Iran
محافظات إيران | Verwaltungsgliederung des Iran | Organización territorial de Irán | استانهای ایران | Provinces d'Iran | Provincias do Irán | Eyaletên Îranê | Provincies van Iran | イランの州 | Lista de províncias do Irão | Административное деление Ирана | Провинције Ирана