At the time of the 2006 National Census, the village's population, as Sardab-e Pain, was 252 in 57 households. The following census in 2011 counted 200 people in 55 households, by which time the village was listed as Sardab-e Sofla. The 2016 census measured the population of the village as 196 people in 59 households.
12سرشماري عمومي نفوس و مسكن 1395: استان اصفهان[General Population and Housing Census 2016: Isfahan Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 19 October 2020. Retrieved 19 December 2022.
↑Mousavi, Mir-Hossein (1 July 1987) [تاریخ تصویب (Approval date) 1366/4/10 (Iranian Jalali calendar)]. ایجاد درهآبو تشکیل تعداد 4 دهستان شامل روستاها، مزارع و مکانها در شهرستان فریدونشهر تابع استان اصفهان[Creation of Abu Darreh, formation of four rural districts including villages, farms and places in Fereydunshahr County]. مرکز پژوهشهای مجلس شورای اسلامی ایران [Research Center of the Islamic Consultative Assembly of Iran] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. پیشنهاد شماره [Proposal No.] 11950.1.5.53. Archived from the original on 2 May 2015. Retrieved 11 May 2026.
↑سرشماري عمومي نفوس و مسكن 1385: استان اصفهان[General Population and Housing Census 2006: Isfahan Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 20 September 2011. Retrieved 25 September 2022.
↑سرشماري عمومي نفوس و مسكن 1390: استان اصفهان[General Population and Housing Census 2011: Isfahan Province]. Iran Data Portal—Syracuse University (in Persian). مرکز آمار ایران [Statistical Centre of Iran]. Archived from the original(Excel) on 17 January 2023. Retrieved 19 December 2022.