At the time of the 2006 National Census, the village's population was 3,242 in 734 households, when it was in the former Meyami District of Shahrud County.[5] The following census in 2011 counted 3,889 people in 946 households.[6] The 2016 census measured the population of the village as 3,514 people in 1,013 households, by which time the district had been separated from the county in the establishment of Meyami County. The rural district was transferred to the new Kalpush District.[7] It was the most populous village in its rural district.[2]
^Hoseynabad-e Kalpu can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3066948" in the "Unique Feature Id" form, and clicking on "Search Database".
^Habibi, Hassan (c. 2024) [Approved 29 August 1370]. Carrying out reforms in the villages of Semnan province. lamtakam.com (Report) (in Persian). Ministry of the Interior, Defense Political Commission of the Government Council. Proposal 8592.1.4.42; Letter 93808-907. Archived from the original on 2 January 2024. Retrieved 2 January 2024 – via Lam ta Kam.
^Rahimi, Mohammadreza (3 July 1390) [Approved 6 February 1390]. Letter of approval regarding national divisions in Semnan province. rc.majlis.ir (Report) (in Persian). Ministry of the Interior, Board of Ministers. Proposal 13216/M; Notification 115040/T36080H. Archived from the original on 25 September 2011. Retrieved 22 November 2023 – via Islamic Parliament Research Council.
