|Rural District||Siyarastaq Yeylaq|
|Time zone||IRST (UTC+3:30)|
|• Summer (DST)||IRDT (UTC+4:30)|
Niasan (Persian: نياسن, also Romanized as Nīāsan and Nīāsān; also known as Nīāsīn) is a village in Siyarastaq Yeylaq Rural District, Rahimabad District, Rudsar County, Gilan Province, Iran. At the 2006 census, its population was 93, in 27 families.
- Niasan can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3076970" in the "Unique Feature Id" form, and clicking on "Search Database".
- "Census of the Islamic Republic of Iran, 1385 (2006)" (Excel). Islamic Republic of Iran. Archived from the original on 2011-11-11.
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