Hadavand people mostly live in Tehran Province, specially in Varamin region, including Varamin, Pishva, Pakdasht, Qarchak, other regions in Tehran province such as Shemiranat, Damavand, Robat Karim, Tehran, Karaj and Lar. There is also a Hadavand population in Garmsar in Semnan province.
Hadavand population have been as follows:
Hadavand people have been categorized as a branch of Lor people. In Landlord and peasant in Persia, Ann Lambton mentions Hadavand people as nomad people originally from Khorramabad. also in the book Rustic & tribal weaves from Varamin, Parviz Tanavoli mentions Hadavands as Lor people while comparing Hadavand weaves with people of Lorestan and also quoting the oral history of the Hadavand as told they were a tribe who were moved from Lorestan to Fars by Karim Khan Zand and then moved to Tehran by Agha Mohammad Khan Qajar A similar version of the migration story is mentioned by Iraj Afshar Sistani in his book, Moqaddame-i bar shenakht-e il-ha, chadorneshinan va tavayef-e Iran (transl. Introduction to recognition of Nomads, Tent-dwellers and Tribes of Iran). In the book, Contemporary Society: Tribal Studies, Hadavand is categorized as Lur-i Kuchak branch of Lor people.Iranica also mentions Hadavands as Lor people. There is also a mention of a Kurdish origin by Masoud Keyhan and a Lak origin.