The
province of Tehran has nearly 15,000,000 inhabitants and is
Iran's most densely populated region. Its area is around 18,637 square kilometres. The city of
Tehran is the capital of both the province and the country, it is the central district of the province. Other districts are: Shemiranat, Rey, Islam Shahr, the
city of Ray, Karaj, Jajrood, Lar, and Rood Shoor. The province gained importance when it
Tehran was claimed the capital by the
Ghajar[?] in
1778. Today Tehran ranks in the top 20 metropolitans of the world.
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