At the time of the 2006 National Census, the county's population was 87,259, in 19,250 households. The following census in 2011 counted 48,837 people in 12,760 households. The 2016 census measured the population of the county as 46,125 in 14,145 households.
Administrative divisions
Kaleybar County's population history and administrative structure over three consecutive censuses are shown in the following table.
↑Mousavi, Mir-Hossein (12 July 1989) [تاریخ تصویب (Approval date) 1368/04/21 (Iranian Jalali calendar)]. ایجاد و تأسیس شهرستان کلیبر به مرکزیت کلیبر در تابعیت استان آذربایجان شرقی از ترکیب سه بخش مرکزی و هوراند و خداآفرین[Creation and establishment of the county of Kaleybar with the center of Kaleybar under the jurisdiction of East Azerbaijan province, consisting of the three Central, Hurand and Khoda Afarin Districts]. لام تا کام [Lam ta Kam] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. شناسه [ID] B790DF19-99D9-4A1D-B6DD-F74EDC366E51. شماره دوره [Course number] 68, شماره جلد [Volume number] 8. Archived from the original on 13 September 2025. Retrieved 13 September 2025.
123سرشماري عمومي نفوس و مسكن 1395: استان آذربایجان شرقی[General Population and Housing Census 2016: East Azerbaijan Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 13 November 2020. Retrieved 19 December 2022.
↑Habibi, Hassan (12 September 1990) [تاریخ تصویب (Approval date) 1369/06/21 (Iranian Jalali calendar)]. تصویب سازمان و سلسله تابعیت عناصر و واحدهای تقسیمات کشوری استان آذربایجان شرقی به مرکزیت شهر تبریز[Approval of the organization and chain of citizenship of the elements and units of the national divisions of East Azerbaijan province, centered in the city of Tabriz]. 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]. یبنامهشماره .93808ت907 [Resolution No. 93808T907]. Archived from the original on 4 August 2013. Retrieved 9 September 2025.
12Rahimi, Mohammad Reza (28 November 2010) [تاریخ تصویب (Approval date) 1389/09/07 (Iranian Jalali calendar)]. تصويب نامه در خصوص تقسيمات كشوري در شهرستان كليبر[Approval letter regarding national divisions in Kaleybar County]. 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 1/4/42/111195 [Proposal Number 1/4/42/111195]. Archived from the original on 26 September 2022. Retrieved 12 September 2025.
12سرشماري عمومي نفوس و مسكن 1385: استان آذربایجان شرقی[General Population and Housing Census 2006: East Azerbaijan 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 آذربایجان شرقی[General Population and Housing Census 2011: East Azerbaijan Province]. Iran Data Portal—Syracuse University (in Persian). مرکز آمار ایران [Statistical Centre of Iran]. Archived from the original(Excel) on 16 January 2023. Retrieved 19 December 2022.
↑Adamec, Ludwig W. (1976) Historical Gazetteer of Iran: Tehran and Northwestern Iran Akademische Drucku. Verlagsanstalt, Graz, Austria, page 326, ISBN3-201-00992-X
↑Burke, Andrew and Elliott. Mark (2008) Iran Lonely Planet, Footscray, Victoria, Australia, page 159, ISBN978-1-74104-293-1