Ernan, YazdErnan is a village in, and the capital of, Ernan Rural District of the Central District of Mehriz County, Yazd province, Iran.DemographicsPopulationAt the time of the 2006 National Census, the village's population was 394 in 115 households. The following census in 2011 counted 296 people in 97 households. The 2016 census measured the population of the village as 296 people in 106 households.TourismNational Heritage SiteErnan Castle is related to the Qajar Empire and is located in Mehriz County.