Birun Bashm Rural District

Birun Bashm Rural District is in Marzanabad District of Chalus County, Mazandaran province, Iran. Its capital is the village Guytar-e Sofla.

Population
At the time of the 2006 National Census, the rural district's population (as a part of the former Kelardasht District) was 5,852 in 1,602 households. There were 5,865 inhabitants in 1,923 households at the following census of 2011, by which time it had been separated from the district in the establishment of Marzanabad District. The 2016 census measured the population of the rural district as 6,678 in 2,348 households. The most populous of its 37 villages was Guytar-e Sofla, with 1,307 people.