432,000 (2010 census). Census includes Erzya [myv].
West Mordovia Republic; Ryazan and Penza provinces; Tatarstan Republic, Orenburg Province, scattered.
Very different from Erzya [myv].
The Tengushen are Erzya ethnically, but speak Moksha. Many children learn the language but usually only use it with elderly relatives (2007). Also use Russian [rus].
There are Moksha villages where people speak hardly any other language except Moksha. Christian.