At the 2006 National Census, its population was 151 in 43 households, when it was in the former Avaj District of Buin Zahra County.[5] The following census in 2011 counted 788 people in 258 households.[6] The latest census in 2016 showed a population of 481 people in 183 households,[2] by which time the district had been separated from the county in the establishment of Avaj County.[7]
^Nirej can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3077042" in the "Unique Feature Id" form, and clicking on "Search Database".