Qolqol Rud DistrictQolqol Rud District is in Tuyserkan County, Hamadan province, Iran. Its capital is the city of Farasfaj.DemographicsEthnicityMost of Qolqol Rud District's villages are populated by Kurds.PopulationAt the time of the 2006 National Census, the district's population was 21,011 in 4,913 households. The following census in 2011 counted 19,572 people in 5,586 households. The 2016 census measured the population of the district as 16,773 inhabitants in 5,178 households.