At the time of the 2006 National Census, the city's population was 3,038 in 913 households.[5] The following census in 2011 counted 2,981 people in 902 households.[6] The 2016 census measured the population of the city as 2,882 people in 927 households.[2]
The name is derived from theTati tribe of Kailan/Khailan/Gailan who were settled in this region during the Tati period. Only a few still speakTati language (Iran). The local folklore, however, produces afolk etymology for the now mysterious name as meaning "king's place."[citation needed]
The earliest human settlement near Kilan is the Neolithic site ofQaleh Asgar located about 1.2 km southeast of Kilan. The site was excavated by Enayatolah Amirlou, who assigned it to theEpipaleolithic period.[7] A reexamination of archaeological finds byFereidoun Biglari showed that the site isNeolithic and dates back to about 8000 years ago.[8]
^Kilan can be found atGEOnet Names Server, atthis link, by opening the Advanced Search box, entering "-3071654" in the "Unique Feature Id" form, and clicking on "Search Database".