Bengali Muslims are the predominant ethnoreligious group of Bangladesh with a population of 146 million, which makes up 90.4% of the country's population as of 2011. The minority Bengali Hindu population made up approximately 8.5% of the population of the country according to the 2011 Census[32] Non-Bengali Muslims make up the largest immigrant community; while the Tibeto-Burman Chakmas, who speak the Indo-Aryan Chakma language, are the largest indigenous ethnic group after Indo-Aryan Bengalis.[33] The Austroasiatic Santhals are the largest aboriginal community.