Tehran County is a county

Counties of Iran

The provinces of Iran further subdivided into counties called shahrestan , an area inside an ostan, and consists of a city centre, few bakhsh and many villages around them. There are usually a few cities and rural agglomerations in each county. Rural agglomerations are a collection of a number...

 in Tehran Province

Tehran Province

Tehran Province is one of the 31 provinces of Iran. It covers on area of 18,909 square kilometers and is located to the north of the central plateau of Iran....

 in Iran

Iran

Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

. The capital of the county is Tehran

Tehran

Tehran , sometimes spelled Teheran, is the capital of Iran and Tehran Province. With an estimated population of 8,429,807; it is also Iran's largest urban area and city, one of the largest cities in Western Asia, and is the world's 19th largest city.In the 20th century, Tehran was subject to...

. At the 2006 census, the county's population was 7,882,843, in 2,313,002 families. The county is subdivided into three districts: the Central District

Central District (Tehran County)

The Central District of Tehran County is a district in Tehran County, Tehran Province, Iran. At the 2006 census, its population was 7,796,431, in 2,291,668 families. The District has three cities: Tehran, Bumahen, and Pardis....

, Kan District

Kan District

Kan District is a district in Tehran County, Tehran Province, Iran. At the 2006 census, its population was 63,514, in 15,837 families. The District has no cities....

, and Aftab District

Aftab District

Aftab District is a district in Tehran County, Tehran Province, Iran. At the 2006 census, its population was 22,898, in 5,497 families. The District has no cities....

. The county has three cities: Tehran

Tehran

Tehran , sometimes spelled Teheran, is the capital of Iran and Tehran Province. With an estimated population of 8,429,807; it is also Iran's largest urban area and city, one of the largest cities in Western Asia, and is the world's 19th largest city.In the 20th century, Tehran was subject to...

, Bumahen

Bumahen

Bumahen is a city in the Central District of Tehran County, Tehran Province, Iran. At the 2006 census, its population was 43,004, in 11,667 families....

, and Pardis

Pardis

Pardis , meaning "New City of Pardis") is a city in the Central District of Tehran County, Tehran Province, Iran. At the 2006 census, its population was 25,360, in 7,228 families.Pardis is a new planned city that has absorbed over 9,775 inhabitants in 2001...

.

Tehran metropolis is situated mostly in Tehran County. It is the most populous county in Iran.