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At the time of the 2006 National Census, the city's population was2,280 in 507 households. The following census in 2011 counted 3,060 people in 668 households. The 2016 census measured the population of the city as 2,460 people in 651 households.
Shirin Su can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3085064" in the "Unique Feature Id" form, and clicking on "Search Database".
Habibi, Hassan (c. 2023) . Approval letter regarding the creation and establishment of Shirin Su District. qavanin.ir (Report) (in Persian). Ministry of the Interior, Political-Defense Commission of the Government Council. Resolution 93808/T907. Archived from the original on 20 March 2023. Retrieved 22 October 2023 – via Laws and Regulations Portal of the Islamic Republic of Iran.