In 2008, three villages merged in the formation of the city of Asara.[5] In 2010, the county was separated from Tehran province in the establishment of Alborz province.[6]
Demographics
Population
At the time of the 2006 National Census, the district's population was 18,856 in 5,407 households.[7] The 2016 census measured the population of the district as 17,150 people in 5,977 households.[4]
Habibi, Hassan (29 July 2001) [تاریخ تصویب (Approval date) 1380/05/07 (Iranian Jalali calendar)]. تصویب نامه در خصوص ایجاد و تأسیس بخش آسارا در شهرستان کرج[Approval letter regarding the creation and establishment of Asara District in Karaj County]. لام تا کام [Lam ta Kam] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. شناسه [ID] 9BAB9918-BE0C-490E-A2AA-24DF2997B673. شماره دوره [Course number] 80. Archived from the original on 15 December 2023. Retrieved 21 June 2025.
سرشماري عمومي نفوس و مسكن 1395: استان البرز[General Population and Housing Census 2016: Alborz Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 28 January 2020. Retrieved 22 June 2025.
Davoodi, Parviz (21 December 2008) [تاریخ تصویب (Approval date) 1387/10/01 (Iranian Jalali calendar)]. تصویب نامه درخصوص تبدیل روستای «آسارا» مرکز بخش آسارا از توابع شهرستان کرج در استان تهران به شهر[Approval letter regarding the conversion of Asara village, the center of Asara District, from the functions of Karaj County in Tehran province, to the 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] F9192D81-8E96-4577-9B68-22A5DB06954B. Archived from the original on 15 December 2023. Retrieved 20 June 2025.
Larijani, Ali (23 June 2010) [تاریخ تصویب (Approval date) 1389/04/02 (Iranian Jalali calendar)]. قانون تأسیس استان البرز[Law on the establishment of Alborz province]. لام تا کام [Lam ta Kam] (in Persian). وزارت کشور [Ministry of the Interior]. مجلس شورای اسلامی [Islamic Consultative Assembly]. نامه شماره [Letter Number] 30588/412. Archived from the original on 16 December 2023. Retrieved 20 June 2025.
سرشماري عمومي نفوس و مسكن 1385: استان تهران[General Population and Housing Census 2006: Tehran Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 20 September 2011. Retrieved 22 June 2025.
