324,000 in Russian Federation (2010 census). Population total all countries: 339,800. Ethnic population: 554,000 (2010 census).
Udmurtiya and Tatarstan; near Ural Mountains, 1,000 km northeast of Moscow, bounded by Kama and Cheptsa rivers.
North Udmurt (Besermyan, Udmurt), South Udmurt (Southwestern Udmurt).
The Besermyan are Udmurt-speaking Tatar. Many children learn the language but only those living in remote rural areas continue to use it actively (Salminen 2007). Also use Russian [rus].
Christian, traditional religion.