Rostov-on-Don (Russian:Росто́в-на-Дону́, tr.Rostov-na-Donu;IPA: [rɐˈstof nə dɐˈnu]) is a port city and the administrative center of Rostov Oblast and the Southern Federal District of Russia. It lies to the southeast of the East European Plain, on the Don River, 32 kilometers (20 mi) from the Sea of Azov. The southwestern suburbs of the city abut the Don River delta. Population: 1,089,261(2010 Census);1,068,267(2002 Census);1,019,305(**** Census).