KiasarKiasar is a city in, and the capital of, Chahardangeh District in Sari County, Mazandaran province, Iran. It also serves as the administrative center for Chahardangeh Rural District.DemographicsPopulationAt the time of the 2006 National Census, the city's population was 3,590 in 913 households. The following census in 2011 counted 2,837 people in 800 households. The 2016 census measured the population of the city as 3,384 people in 1,084 households.