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Rural district in Semnan province, Iran
For other places with the same name, see Poshtkuh Rural District. For other places with a similar name, see Poshtkuh.
At the time of the 2006 National Census, the rural district's population (as a part of the former Mehdishahr District of Semnan County) was 1,825 in 561 households. There were 5,717 inhabitants in 1,609 households at the following census of 2011, by which time the district had been separated from the county in the establishment of Mehdishahr County. The rural district was transferred to the new Shahmirzad District. The 2016 census measured the population of the rural district as 3,844 in 1,326 households. The most populous of its 68 villages was Fulad Mahalleh, with 2,518 people.