At the time of the 2006 National Census, the village's population was 1,344 in 370 households, when it was in the former Mehdishahr District of Semnan County.[5] The following census in 2011 counted 3,910 people in 1,043 households,[6] by which time the district had been separated from the county in the establishment of Mehdishahr County. The rural district was transferred to the new Shahmirzad District.[7] The 2016 census measured the population of the village as 2,518 people in 852 households. It was the most populous village in its rural district.[2]
^Fulad Mahalleh can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3063122" in the "Unique Feature Id" form, and clicking on "Search Database".
^Davodi, Parviz (c. 2024) [Approved 29 July 1386]. Approval letter regarding the reforms of national divisions in Semnan province. lamtakam.com (Report) (in Persian). Ministry of the Interior, Political-Defense Commission of the Government Board. Proposal 93023/42/1/4/1; Letter 58538/T26118H; Notification 160036/T38028K. Archived from the original on 2 January 2024. Retrieved 2 January 2024 – via Lam ta Kam.