Izhevsk or Ijevsk is the capital city of Udmurtia, Russia. It is situated along the Izh River, west of the Ural Mountains in Eastern Europe. It is the …Izhevsk or Ijevsk is the capital city of Udmurtia, Russia. It is situated along the Izh River, west of the Ural Mountains in Eastern Europe. It is the 21st-largest city in Russia, and the most populous in Udmurtia, with over 600,000 inhabitants.