Kuhin DistrictKuhin District is in Qazvin County, Qazvin province, Iran. Its capital is the city of Kuhin.DemographicsPopulationAt the time of the 2006 National Census, the district's population was 17,411 in 4,071 households. The following census in 2011 counted 15,587 people in 4,269 households. The 2016 census measured the population of the district as 19,222 inhabitants in 6,146 households.