At the time of the 2006 National Census, the city's population was 4,832 in 1,262 households. The following census in 2011 counted 5,123 people in 1,468 households. The 2016 census measured the population of the city as 5,043 people in 1,596 households.
12Aref, Mohammad Reza (22 May 2002) [تاریخ تصویب (Approval date) 1376/03/11 (Iranian Jalali calendar)]. مجوز تبدیل روستای ارداق به شهر ارداق[Permit to convert Ardaq village into Ardaq 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] 23B671AE-2DA3-42E1-A2F3-08A90E63D521. Archived from the original on 26 June 2025. Retrieved 26 June 2025.
12سرشماري عمومي نفوس و مسكن 1395: استان قزوین[General Population and Housing Census 2016: Qazvin Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 30 November 2021. Retrieved 19 December 2022.
↑Habibi, Hassan (23 August 2000) [تاریخ تصویب (Approval date) 1379/06/02 (Iranian Jalali calendar)]. ایجاد تغییرات و اصلاحات تقسیماتی در استان قزوین[Creating divisional changes and reforms in Qazvin province]. لام تا کام [Lam ta Kam] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. شناسه [ID] 70979D9E-88C2-4E32-BE4F-49C1650EC0B9. شماره دوره [Course number] 79. Archived from the original on 26 June 2025. Retrieved 26 June 2025.
↑Mousavi, Mir-Hossein (1 July 1987) [تاریخ تصویب (Approval date) 1366/04/10 (Iranian Jalali calendar)]. ایجاد و تشکیل تعداد 25 دهستان شامل روستاها، مزارع و مکانها در شهرستان قزوین تابع استان زنجان[Creation and formation of 25 rural districts including villages, farms and places in Qazvin County under Zanjan province]. لام تا کام [Lam ta Kam] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. شناسه [ID] 9425AEBD-4C13-40ED-8980-AB3520B53C94. شماره دوره [Course number] 66, شماره جلد [Volume number] 6. Archived from the original on 25 June 2025. Retrieved 25 June 2025.
↑سرشماري عمومي نفوس و مسكن 1385: استان قزوین[General Population and Housing Census 2006: Qazvin 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 قزوین[General Population and Housing Census 2011: Qazvin Province]. Iran Data Portal—Syracuse University (in Persian). مرکز آمار ایران [Statistical Centre of Iran]. Archived from the original(Excel) on 19 January 2023. Retrieved 19 December 2022.