At the time of the 2006 National Census, the city's population was 12,738 in 3,329 households, when it was in Tehran province.[5] The 2016 census measured the population of the city as 22,726 people in 7,129 households,[2] by which time the county had separated from the province and become a part of recently established Alborz province.[6]
^Garmdarreh can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "217474" in the "Unique Feature Id" form, and clicking on "Search Database".