KejanKejan is a village in, and the capital of, Baharestan Rural District of the Central District of Nain County, Isfahan province, Iran.DemographicsPopulationAt the time of the 2006 National Census, the village's population was 573 in 195 households. The following census in 2011 counted 413 people in 162 households. The 2016 census measured the population of the village as 357 people in 158 households. It was the most populous village in its rural district.