Seyd BeygSeyd Beyg is a village in Soluk Rural District of the Central District in Hashtrud County, East Azerbaijan province, Iran.DemographicsPopulationAt the time of the 2006 National Census, the village's population was 643 in 134 households. The following census in 2011 counted 627 people in 152 households. The 2016 census measured the population of the village as 546 people in 131 households. It was the most populous village in its rural district.