At the time of the 2006 National Census, the village's population was 1,224 in 273 households, when it was in the former Khafr District of Jahrom County.[6] The following census in 2011 counted 1,303 people in 361 households.[7] The 2016 census measured the population of the village as 1,400 people in 416 households. It was the most populous village in its rural district.[2]
In 2019, the district was separated from the county in the establishment of Khafr County, the rural district was transferred to the new Central District.[4]
^Zarjan can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3089143" in the "Unique Feature Id" form, and clicking on "Search Database".