At the time of the 2006 National Census, the village's population was 738 in 168 households, when it was in Ungut District[c] of Germi County.[6][d] The following census in 2011 counted 761 people in 193 households.[9] The 2016 census measured the population of the village as 720 people in 207 households.[2]
In 2019, the district was separated from the county in the establishment of Ungut County and renamed the Central District.[4]
^OpenStreetMap contributors (24 August 2024). "Qarah Aghaj-e Pain, Ungut County" (Map). openstreetmap.org (OpenStreetMap) (in Persian). Retrieved 24 August 2024.
^Qarah Aghaj-e Pain can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3816600" in the "Unique Feature Id" form, and clicking on "Search Database".
^A look at the land of Moghan. germinews.arzublog.com (Report) (in Persian). c. 2024. Archived from the original on 18 January 2025. Retrieved 18 January 2025 – via Germi News.