At the 2006 National Census, its population was 979 in 263 households, when it was in Buin Zahra County.[5] The following census in 2011 counted 1,205 people in 345 households.[6] The latest census in 2016 showed a population of 1,080 people in 339 households, by which time the district had been separated from the county in the establishment of Avaj County.[7] It was the most populous village in its rural district.[2]
^Kolanjin can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3071812" in the "Unique Feature Id" form, and clicking on "Search Database".