At the time of the 2006 National Census, the village's population was 342 in 89 households, when it was in Doreh Rural District of the Central District.[5] The following census in 2011 counted 404 people in 99 households.[6] The 2016 census measured the population of the village as 397 people in 113 households, by which time the rural district had been separated from the district in the establishment of Doreh District. Lanu was transferred to Lanu Rural District created in the mew district.[4] It was the most populous village in its rural district.[2]
^Lanu can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3072894" in the "Unique Feature Id" form, and clicking on "Search Database".