Qaleh Sin

Qaleh Sin is a village in, and the capital of, Pishva Rural District of the Central District of Pishva County, Tehran province, Iran.

At the 2006 National Census, its population was 2,083 in 506 households, when it was in Asgariyeh Rural District of the former Pishva District of Varamin County. The following census in 2011 counted 2,122 people in 561 households, by which time the district had been separated from the county in the establishment of Pishva County. The latest census in 2016 showed a population of 2,892 people in 811 households. It was the most populous village in its rural district.