SereynSereyn is a village in Zarrineh Rud Rural District of Bezineh Rud District in Khodabandeh County, Zanjan province, Iran.DemographicsPopulationAt the time of the 2006 National Census, the village's population was 447 in 79 households. The following census in 2011 counted 406 people in 83 households. The 2016 census measured the population of the village as 317 people in 92 households.