Astrakhan is the largest city and administrative centre of Astrakhan Oblast in southern Russia. The city lies on two banks of the Volga, in the upper part of the Volga Delta, on eleven islands of the Caspian Depression, 60 miles from the Caspian Sea, with a population of 475,629 residents at the 2021 Census. At an elevation of 28 meters (92 ft) below sea level, it is the lowest city in Russia.