At the 2006 National Census, its population was 654 in 155 households, when it was in Buin Zahra County.[4] The following census in 2011 counted 527 people in 154 households.[5] The latest census in 2016 showed a population of 531 people in 182 households, by which time the district had been separated from the county in the establishment of Avaj County.[6] It was the most populous village in its rural district.[2]
^Aruchan can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3053718" in the "Unique Feature Id" form, and clicking on "Search Database".