At the time of the 2006 National Census, the village's population was 2,728 in 730 households, when it was in Varzaq Rural District of the Central District. The following census in 2011 counted 2,856 people in 882 households. The 2016 census measured the population of the village as 2,533 people in 804 households, by which time the rural district had been separated from the district in the establishment of Zendehrud District. Chehel Khaneh was transferred to Qarah Bisheh Rural District created in the district. It was the most populous village in its rural district.
^Chehel Khaneh can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3058274" in the "Unique Feature Id" form, and clicking on "Search Database".
