At the time of the 2006 National Census, the county's population was 70,735 in 17,072 households. The following census in 2011 counted 65,047 people in 18,062 households. The 2016 census measured the population of the county as 74,109 in 22,530 households.
Administrative divisions
Semirom County's population history and administrative structure over three consecutive censuses are shown in the following table.
123سرشماري 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.
↑Habibi, Hassan (12 September 1990) [تاریخ تصویب (Approval date) 1369.6.21 (Iranian Jalali calendar)]. تصویب سازمان و سلسله تابعیت عناصر و واحدهای تقسیمات کشوری استان اصفهان به مرکزیت شهر اصفهان[Approval of the organization and hierarchy of subordination of the elements and units of the national divisions of Isfahan province with the center of Isfahan city]. لام تا کام [Lam ta Kam] (in Persian). وزارت کشور [Ministry of the Interior]. کمیسیون سیاسی دفاعی هیأت دولت [Political Defense Commission of the Government Board]. شناسه [ID] 7CE85F3A-6CEE-4A59-9498-E435D7B5C890. شماره دوره [Course number] 69, شماره جلد [Volume number] 3. Archived from the original on 4 February 2024. Retrieved 3 May 2026.
12Jahangiri, Eshaq (17 March 2019) [تاریخ ابلاغ (Notification date) 26/12/1397 (Iranian Jalali calendar)]. تصویبنامه در خصوص تقسیمات کشوری در استانهای آذربایجان غربی، اردبیل، اصفهان، بوشهر، سیستان و بلوچستان، فارس، قم، لرستان، مازندران[Approval regarding national divisions in the provinces of West Azerbaijan, Ardabil, Isfahan, Bushehr, Sistan and Baluchestan, Fars, Qom, Lorestan, Mazandaran]. پژوهشکده حقوقی شهر دانش [Shahr Danesh Law Research Institute] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. شماره ابلاغیه [Notification number] 175033/T56016H. Archived from the original on 29 June 2019. Retrieved 14 June 2025.
↑Rahimi, Mohammad Reza (8 February 2012) [19 بهمن 1390 (1390 Bahman 19) (Iranian Jalali calendar)]. هیئت وزیران تصویب کرد؛ چند تغییر در نقشه تقسیمات کشورى استان اصفهان[The Cabinet approved some changes in the map of the national divisions of Isfahan province]. Government of the Islamic Republic of Iran (in Persian). وزارت کشور [Ministry of the Interior]. کمیسیون سیاسی دفاعی هیأت دولت [Political Defense Commission of the Government Board]. کد خبر [News Code] 211425. Archived from the original on 16 September 2018. Retrieved 2 June 2026.
12سرشماري 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.
12سرشماري 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.