Kazan metropolitan area

Kazan metropolitan area is one of the largest metropolitan areas located in Russia which metropole includes the cities and districts of Tatarstan and Mari El republics:
 * Cities: Kazan, Zelenodolsk, Volzhsk;
 * Districts (rayons) of Tatarstan: Atninsky, Verkhneuslonsky, Vysokogorsky, Zelenodolsky, Laishevsky, Pestrechinsky;
 * Districts (rayons) of Mari El: Volzhsky, Zvenigovsky.