At the time of the 2006 National Census, Hajjilar's population was 1,291 in 370 households, when it was a village in Hajjilar Rural District[b] of the former Chaypareh District of Khoy County.[6] The following census in 2011 counted 1,560 people in 428 households,[7] by which time the district had been separated from the county in the establishment of Chaypareh County. The rural district was transferred to the new Hajjilar District and renamed Hajjilar-e Jonubi Rural District, and Hajjilar was transferred to Hajjilar-e Shomali Rural District created in the district.[4] The 2016 census measured the population of the village as 1,394 people in 434 households. It was the most populous village in its rural district.[2]
After the census, Hajjilar was elevated to the status of a city.[8]
^Hajjilar can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3065605" in the "Unique Feature Id" form, and clicking on "Search Database".
^ abcDavodi, Parviz (24 January 1393) [Approved 18 September 1386]. Approval letter regarding reforms of national divisions in West Azerbaijan province. rc.majlis.ir (Report) (in Persian). Ministry of the Interior, Political-Defense Commission of the Government Board. Proposal 138613/42/4/1; Notification 156165/T32690K. Archived from the original on 13 April 2014. Retrieved 21 November 2023 – via Islamic Parliament Research Center.