The online edition of the Dehkhoda Dictionary, quoting Iranian Army files,[5] refers to Jananlu as a Malaria-infested location with a population of 284.

[8] At the time of the 2006 National Census, the village's population was 604 in 153 households, when it was in the former Khoda Afarin District of Kaleybar County.

[2] The rate of population growth is perhaps the highest in the Arasbaran region, and it is expected that the village will be designated as a city in near future.

[citation needed] Just to the north of Jananlu in the Khoda Afarin Plain, near the Araxes river, there are located two important archaeological sites of the Chalcolithic period that are near to each other.

Outside of the residential area, some unusual funerary structures of Kura-Araxes period were found, which are unknown from elsewhere in Iran.