At the time of the 2006 National Census, the village's population was 3,435 in 834 households, when it was in Ghaniabad Rural District of the Central District of Ray County. The following census in 2011 counted 3,121 people in 879 households, by which time most of Siyahrud Rural District had transferred to the newly established Pardis County. Mesgarabad was transferred to Siyahrud Rural District of the Central District of Tehran County. The 2016 census measured the population of the village as 2,265 people in 722 households. It was the most populous village in its rural district.
^Mesgarabad can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3074752" in the "Unique Feature Id" form, and clicking on "Search Database".
^Rahimi, Mohammad Reza (c. 2013) [Approved 10 September 1391]. Approval letter regarding national divisions in Tehran province. rc.majlis.ir (Report) (in Persian). Ministry of the Interior, Council of Ministers. Notification 197210/T46590AH. Archived from the original on 1 June 2013. Retrieved 23 November 2023 – via Research Center of the System of Laws of the Islamic Council of the Farabi Library of Mobile Users.
