Koshk-e SaraKoshk-e Sara is a village in Kheyrud Kenar Rural District of the Central District in Nowshahr County, Mazandaran province, Iran.DemographicsPopulationAt the time of the 2006 National Census, the village's population was 3,428 in 903 households. The following census in 2011 counted 3,821 people in 1,181 households. The 2016 census measured the population of the village as 4,157 people in 1,377 households.