At the time of the 2006 National Census, Sedeh's population was 3,449 in 745 households, when it was a village in Bala Khaf Rural District.[5] The following census in 2011 counted 3,916 people in 1,014 households.[6] The 2016 census measured the population of the village as 4,258 people in 1,169 households. It was the most populous village in its rural district.[2]
After the census, Sedeh was elevated to the status of a city.[4]
^Sedeh can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3083220" in the "Unique Feature Id" form, and clicking on "Search Database".