Nizhniye Sergi (Russian:Ни́жние Серги́) is a town and the administrative center of Nizhneserginsky District in Sverdlovsk Oblast, Russia, located on a rolling plain surrounded by the Ural Mountains, on the Serga River 120 kilometers (75mi) from Yekaterinburg, the administrative center of the oblast. Population: 10,336(2010 Census);12,567(2002 Census);14,938(**** Census).