At the time of the 2006 National Census, the city's population was 155,289 in 34,549 households.[7] The following census in 2011 counted 172,213 people in 42,613 households.[8] The 2016 census measured the population of the rural district as 194,030 people in 53,581 households.[2]
Ilam is situated in the cold mountainous region of Iran at a height of 1,319 metres (4,330 ft) 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.[9] Monthly rainfalls have been as high as 352.1 millimetres (13.86 in) in March 1974, whilst daily rainfalls have reached 86 millimetres or 3.39 inches on 26 February 1991. Temperatures have ranged from a high of 47.0 °C or 116.6 °F on 20 August 1975 to a low of −15.0 °C or 5.0 °F on 5 February 1974.
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. Thepassive 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.[14]
^Ilam, Iran can be found atGEOnet Names Server, atthis link, by opening the Advanced Search box, entering "-3067203" in the "Unique Feature Id" form, and clicking on "Search Database".
^J Khodakarami and I Knight.Required and Current Thermal Conditions for Occupants in Iranian Hospitals. HVAC&R Research, Vol. 14, Number 2, March 2008, pp 175-194
^"FORM 1: STATION ILAM". Iranian Meteorological Organization. Archived from the original on 8 May 2012. Retrieved18 November 2011.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
^"FORM 1: STATION ILAM". Iranian Meteorological Organization. Archived from the original on 8 May 2012. Retrieved18 November 2011.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
Farshid Sāmāni,Ilam, the Sleeping Beauty, in Persian, Jadid Online, 26 May 2009:[1]. •Discovering Ilam, in English, Jadid Online, 22 October 2009,[2]. • Photo gallery, containing 25 photographs with informative captions in English:[3].