| Official Name: | Ilam |
| Native Name: | Persian: ايلام Îlam Kurdish: ئیلام |
| Settlement Type: | City |
| Pushpin Map: | Iran#Ilam Iran |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | Iran |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ilam |
| Subdivision Type2: | County |
| Subdivision Name2: | Ilam |
| Subdivision Type3: | District |
| Subdivision Name3: | Central |
| Leader Title: | Mayor |
| Leader Name: | Afshin Mozaffari |
| Population As Of: | 2016 |
| Population Total: | 194030 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Coordinates: | 33.635°N 46.4072°W |
| Coordinates Footnotes: | [1] |
| Elevation M: | 1427 |
| Area Code: | 0843 |
| Blank Name: | Climate |
| Blank Info: | Csa |
Ilam (Persian: ايلام;) is a Kurdish city in the Central District of Ilam County, Ilam province, Iran, serving as capital of the province, the county, and the district.[2] The Kabir Kuh mountain range lies east of the city. To the west, it borders Iraq.
Language composition:[3]
At the time of the 2006 National Census, the city's population was 155,289 in 34,549 households.[4] The following census in 2011 counted 172,213 people in 42,613 households.[5] The 2016 census measured the population of the rural district as 194,030 people in 53,581 households.[6]
Ilam is situated in the cold mountainous region of Iran at a height of 1319m (4,327feet) above mean sea level. It is located in the west of Iran at a latitude of 33° 38´ north and longitude of 46° 26´ east. Although this city is surrounded by mountains, its climate is also affected by deserts from the west and the south. This region presents a highly variable annual weather profile. Heavy showers or snow in the winter and dusty, brutally hot, dry weather in the summer are normal for this region.[7] Monthly rainfalls have been as high as 352.1mm in March 1974, whilst daily rainfalls have reached 862NaN2 on 26 February 1991. Temperatures have ranged from a high of 47C on 20 August 1975 to a low of NaNC on 5 February 1974.
Ilam's climate is classed under the Köppen climate classification as a Mediterranean climate (Csa) with continental influences.
Like many other regions of Iran, architecture in Ilam includis consists of a mix of both traditional and contemporary periods. Although easy access to fossil fuels and electricity may have aided the transition in Iranian architecture in other regions of Iran from its traditional to modern styles, the increasing population of Ilam may have also played a role in this transition.
The Governor Castle, Falahaty Mansion and The Mirgholam Castle are examples of some surviving traditional buildings in Ilam. The courtyard dwelling is the main type of the buildings of this period. This type of building was accepted as the main building type over all Iran for both climatic and cultural reasons. Brick is the main constructional material in these buildings. The passive thermal techniques indicated for the Iranian traditional buildings are commonly used in these buildings.
The Governor Castle of Ilam was built in type of courtyard. Adding shade and moisture by using green landscape, high trees and a pond, were the main passive techniques used in this building to reduce the temperature in summer.The Mirgholam Castle of Ilam presents a classic Iranian courtyard. The garden and the pound were the main elements of this type of buildings. The Falahaty Mansion used a pitched roof as it was regular beside the flat roofs in the traditional buildings in Ilam earlier.[8]
Ilam contains the following universities: