At the time of the 2006 National Census, Samarin's population was 3,146 in 711 households, when it was a village in Gharbi Rural District of the Central District.[8] The following census in 2011 counted 2,245 people in 596 households,[9] by which time the rural district had been separated from the district in the formation of Samarin District.[6] The 2016 census measured the population of the village as 2,326 people in 683 households. It was the most populous village in its rural district.[4]
12Fazli, Abdolreza Rahmani (22 January 2018) [تاریخ تصویب (Approval date) 1396/11/2 (Iranian Jalali calendar)]. مصوبه وزارت کشور در خصوص تبدیل روستای ثمرین مرکز بخش ثمرین شهرستان اردبیل به شهر[Approval of the Ministry of Interior regarding the conversion of the village of Samarin, the center of Samarin District, Ardabil County, into a city]. مهدی داودآبادی [Mehdi Davudabadi] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. نامه شماره 33667/59806 [Letter Number 33667/59806]. Archived from the original on 18 June 2025. Retrieved 18 June 2025.
12سرشماري عمومي نفوس و مسكن 1395: استان اردبیل[General Population and Housing Census 2016: Ardabil Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 22 March 2019. Retrieved 19 June 2025.
↑Samarin can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3082133" in the "Unique Feature Id" form, and clicking on "Search Database".
12Rahimi, Mohammad Reza (31 January 2010) [تاریخ تصویب (Approval date) 1388/11/11 (Iranian Jalali calendar)]. تصویب نامه در خصوص تقسیمات کشوری در شهرستان اردبیل[Resolution on national divisions in Ardabil County]. مهدی داودآبادی [Mehdi Davudabadi] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. پیشنهاد شماره 125844 / 42/ 4/ 1 [Proposal Number 125844/42/1/4]. Archived from the original on 18 June 2025. Retrieved 18 June 2025.
↑Mousavi, Mir-Hossein (22 April 1987) [تاریخ تصویب (Approval date) 1366/02/02 (Iranian Jalali calendar)]. ایجاد و تشکیل تعداد 21 دهستان شامل روستاها، مزارع و مکانهای واقع در شهرستان اردبیل تابعه استان آذربایجان شرقی[Creation and formation of 21 rural districts including villages, farms and places in Ardabil County under East Azerbaijan province]. لام تا کام [Lam ta Kam] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. شناسه [ID] FEB9CB78-0F1F-47EF-8168-BEAC75F0CE8B. شماره دوره [Course number] 66, شماره جلد [Volume number] 4. Archived from the original on 18 June 2025. Retrieved 18 June 2025.
↑سرشماري عمومي نفوس و مسكن 1385: استان اردبیل[General Population and Housing Census 2006: Ardabil Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 20 September 2011. Retrieved 19 June 2025.
↑سرشماري عمومي نفوس و مسكن 1390: استان اردبیل[General Population and Housing Census 2011: Ardabil Province]. Iran Data Portal—Syracuse University (in Persian). مرکز آمار ایران [Statistical Centre of Iran]. Archived from the original(Excel) on 15 January 2023. Retrieved 19 June 2025.