Chuvash

The main languages spoken in Chuvashia are:
Russian - the language of interethnic communication and administration throughout the Russian Federation.
Chuvash - a Turkic language unique among Turkic languages for its distinct linguistic features, co-official in this republic of Russia and spoken by the titular Chuvash population.
Both Russian and Chuvash are official languages of the Chuvash Republic, a federal subject of Russia.