Until 2004, Quchan County had three districts: The Central, Bajgiran, and Faruj Districts, the latter of which was separated from the county in the establishment of Faruj County of North Khorasan province.
At the time of the 2006 National Census, the county's population was 179,613 in 45,502 households. The following census in 2011 counted 179,714 people in 51,045 households. The 2016 census measured the population of the county as 174,495 in 52,851 households.
Administrative divisions
Quchan County's population history and administrative structure over three consecutive censuses are shown in the following table.
123سرشماري 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.
↑Aref, Mohammad Reza (16 May 2004) [مصوب (Approved) 1383,02,27 (Iranian Jalali calendar)]. تغييرات و اصلاحات تقسيماتي در استان خراسان[Divisional changes and amendments in Khorasan province]. سامانه ملی قوانین و مقررات [National System of Laws and Regulations] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. Archived from the original on 7 January 2021. Retrieved 3 February 2026.
12Jahangiri, Eshaq (16 December 2020) [۱۳۹۹/۹/۲۶ تصویب (Approved 1399/9/26) (Iranian Jalali calendar)]. تصویبنامه در خصوص تقسیمات کشوری در شهرستان قوچان استان خراسان رضوی[Approval regarding national divisions in Quchan County, Razavi Khorasan province]. پژوهشکده حقوقی شهر دانش [Shahr Danesh Law Research Institute] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. پیشنهاد شماره ۷۷۴۸۴ [Proposal No. 77484]. Archived from the original on 27 February 2021. Retrieved 19 March 2026.
12Jahangiri, Eshaq (16 December 2020) [۱۳۹۹/۹/۲۶ تصویب (Approved 1399/9/26) (Iranian Jalali calendar)]. تصویبنامه در خصوص تقسیمات کشوری در شهرستان قوچان استان خراسان رضوی[Approval regarding national divisions in Quchan County, Razavi Khorasan province]. پژوهشکده حقوقی شهر دانش [Shahr Danesh Law Research Institute] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. پیشنهاد شماره ۶۸۷۴۲ [Proposal No. 68742]. Archived from the original on 27 February 2021. Retrieved 19 March 2026.
123وزارت کشور با ارتقای ۲ روستای قوچان به شهر موافقت اصولی کرد[The Ministry of the Interior agreed in principle to the promotion of two villages of Quchan to cities]. Islamic Republic News Agency (in Persian). وزارت کشور [Ministry of the Interior]. 1 March 2021 [۱۱ اسفند ۱۳۹۹ (11 Esfand 1399) (Iranian Jalali calendar)]. کد خبر: 84246667 [News Code: 84246667]. Archived from the original on 15 June 2021. Retrieved 19 March 2026.
12Jahangiri, Eshaq (25 July 2021) [مصوب (Approved) 3/5/1400 (Iranian Jalali calendar)]. تصويب نامه در خصوص تقسيمات كشوري در شهرستان قوچان استان خراسان رضوي[Letter of approval regarding national divisions in Quchan County, Razavi Khorasan province]. سامانه ملی قوانین و مقررات [National System of Laws and Regulations] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. پيشنهاد شماره [Proposal Number] 186259. Archived from the original on 5 May 2023. Retrieved 19 March 2026.
12سرشماري 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.
12سرشماري 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.