At the time of the 2006 National Census, the village's population was 471 in 102 households, when it was in the former Mamulan District of Pol-e Dokhtar County.[4] The following census in 2011 counted 449 people in 111 households.[5] The 2016 census measured the population of the village as 384 people in 97 households. It was the most populous village in its rural district.[2]
In April 2023, the district was separated from the county in the establishment of Mamulan County, and the rural district was transferred to the new Afrineh District.[6]
^Qaleh Nasir can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3079293" in the "Unique Feature Id" form, and clicking on "Search Database".