Eyvan or Aivan is one of the counties

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...

 of Ilam province

Ilam Province

Ilam Province is one of the 31 provinces of Iran. It is in the south-west of the country, bordering Iraq. Its provincial center is the city of Ilam. Covering an area of 19,086 square kilometers, the cities of the province are Ilam, Mehran, Dehloran, Dareh Shahr, Sarable, Eyvan, Abdanan and Arkwaz...

 in western 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...

. Its administrative center is the city of Eyvan. At the 2006 census, the county's population was 47,380, in 10,040 families. As of 2010, the estimated population had grown to 49,002. The county is subdivided into two districts: the Central District

Central District (Eyvan County)

The Central District of Eyvan County is a district in Eyvan County, Ilam Province, Iran. At the 2006 census, its population was 37,858, in 8,081 families. The District has one city: Eyvan....

 and Zarneh District

Zarneh District

Zarneh District is a district in Eyvan County, Ilam Province, Iran. At the 2006 census, its population was 9,522, in 1,959 families. The District has one city: Zarneh....

. The county has two cities: Eyvan and Zarneh

Zarneh

Zarneh is a city in and capital of Zarneh District, in Eyvan County, Ilam Province, Iran. At the 2006 census, its population was 2,909, in 605 families....

.

List of cities and villages in the county by population.

Rank	City/Village	2006 census	2010
1	Eyvan (ايوان)	27,752	29,591
2	Zarneh Zarneh Zarneh is a city in and capital of Zarneh District, in Eyvan County, Ilam Province, Iran. At the 2006 census, its population was 2,909, in 605 families....  (زرنه)	2,909	3,009
3	Sarāb Sarab Sarab is a city in and the capital of Sarab County, East Azerbaijan Province, Iran. At the 2006 census, its population was 42,057, in 11,045 families.Sarab is famous for its rugs. From 1747 to 1813, it was the capital of the Khanate of Sarab....  (سراب)	1,522	1,574
4	Shahrak-e Nabovvat (شهرك نبوت)	1,413	1,461
5	Sartang (سرتنگ)	1,177	1,217
6	Chahār Meleh (چهارمله)	802	829