Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
At the time of the 2006 National Census, the village's population was 4,342 in 1,156 households. The following census in 2011 counted 4,036 people in 1,245 households. The 2016 census measured the population of the village as 3,949 people in 1,318 households. It was the most populous village in its rural district.
Hesar Khorvan can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3066469" in the "Unique Feature Id" form, and clicking on "Search Database".
Aref, Mohammad Reza (c. 2024) . Divisional reforms and changes in Qazvin province. lamtakam.com (Report) (in Persian). Ministry of the Interior, Political-Defense Commission of the Government Board. Notification 58538/T26118H. Archived from the original on 10 January 2024. Retrieved 10 January 2024 – via Lam ta Kam.
The Tati dialects in the Sociolinguistic Context of Northwestern Iran and Transcaucasia, Stilo, D. 1981: In: Iranian Studies 14.3/4, 137-187.