At the time of the 2006 National Census, the city's population was 3,166 in 840 households. The following census in 2011 counted 3,788 people in 1,016 households. The 2016 census measured the population of the city as 3,719 people in 1,164 households.
12Habibi, Hassan (2 June 1996) [تاریخ تصویب (Approval date) 1375.3.13 (Iranian Jalali calendar)]. تبدیل روستای کدکن تابع شهرستان تربت حیدریه به شهر[Conversion of the village of Kadkan, subordinate to Torbat-e Heydarieh County, into a city]. مرکز پژوهشهای مجلس شورای اسلامی ایران [Research Center of the Islamic Consultative Assembly of Iran] (in Persian). وزارت کشور [Ministry of the Interior]. کمیسیون سیاسی دفاعی هیأت دولت [Political Defense Commission of the Government Board]. پیشنهاد شماره [Proposal No.] 1.4.42.13910. Archived from the original on 25 October 2014. Retrieved 30 March 2026.
12سرشماري عمومي نفوس و مسكن 1395: استان خراسان رضوی[General Population and Housing Census 2016: Razavi Khorasan Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 2 April 2022. 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 کشوی استان خراسان به مرکزیت شهر مشهد[Approval of the organization and chain of citizenship of the elements and units of the divisions of Khorasan province, centered in Mashhad]. مرکز پژوهشهای مجلس شورای اسلامی ایران [Research Center of the Islamic Consultative Assembly of Iran] (in Persian). وزارت کشور [Ministry of the Interior]. کمیسیون سیاسی دفاعی هیأت دولت [Political Defense Commission of the Government Board]. 84902ت125ک [84902T125K]. Archived from the original on 17 November 2015. Retrieved 31 January 2026.
↑Mousavi, Mir-Hossein (1 July 1987) [تاریخ تصویب (Approval date) 1366.4.10 (Iranian Jalali calendar)]. ایجاد و تشکیل 20 دهستان شامل روستاها، مزارع و مکانها در شهرستان تربت حیدریه تابع استان خراسان[Creation and formation of 20 rural districts including villages, farms and places in Torbat-e Heydarieh County, Khorasan province]. 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.] 44.1.5.53. Archived from the original on 25 October 2014. Retrieved 5 March 2026.
↑سرشماري عمومي نفوس و مسكن 1385: استان خراسان رضوی[General Population and Housing Census 2006: Razavi Khorasan 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 خراسان رضوی[General Population and Housing Census 2011: Razavi Khorasan Province]. Iran Data Portal—Syracuse University (in Persian). مرکز آمار ایران [Statistical Centre of Iran]. Archived from the original(Excel) on 20 January 2023. Retrieved 19 December 2022.