At the time of the 2006 National Census, Eresk's population was 2,657 in 783 households, when it was a village in Eresk Rural District of the former Boshruyeh District of Ferdows County.[6] The following census in 2011 counted 2,954 people in 909 households,[7] by which time the district had been separated from the county in the establishment of Boshruyeh County. The rural district was transferred to the new Eresk District,[4] and Eresk was elevated to the status of a city.[8] The 2016 census measured the population of the city as 2,955 people in 980 households.[2]
^Eresk can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3062120" in the "Unique Feature Id" form, and clicking on "Search Database".
^ ab"Boshruyeh District was upgraded to a county". farsnews.ir (in Persian). Ministry of the Interior, Cabinet of Ministers. 12 November 2008 [Approved 13 March 1386]. Proposal 16340/42/4/1. Archived from the original on 10 November 2023. Retrieved 10 November 2023 – via Fars Media Corporation.