Tehran County (Persian: تهران) is a county in Tehran Province in Iran. The capital of the county is Tehran. Persian is an Indo-European language spoken in Iran, Afghanistan, Tajikistan, Uzbekistan, Turkmenistan, Bahrain, Iraq, Azerbaijan, Armenia, Georgia, Southern Russia, neighboring countries, and elsewhere. ... A county is generally a sub-unit of regional self-government within a sovereign jurisdiction. ... Tehran province has been the seat of Irans capital, Tehran, since 1778. ... Tehran (IPA: ; Persian: ØªÙØ±Ø§Ù, also transliterated as Teheran or TehrÄn), population 7,160,094 (metropolitan: 14,000,000[citation needed]), and a land area of 658 square kilometers, is the capital city of Iran and the center of Tehran Province. ...
References
اطلس گیتاشناسی استانهای ایران [Atlas Gitashenasi Ostanhai Iran] (Gitashenasi Province Atlas of Iran)