Pain Kuh, ZanjanPain Kuh is a village in Bonab Rural District of the Central District in Zanjan County, Zanjan province, Iran.DemographicsPopulationAt the time of the 2006 National Census, the village's population was 597 in 141 households. The following census in 2011 counted 1,254 people in 327 households. The 2016 census measured the population of the village as 1,466 people in 420 households.