Udomlya (Russian:Удо́мля) is a town and the administrative center of Udomelsky District in Tver Oblast, Russia, located on the shores of Lake Pesvo on the Rybinsk–Bologoye railway, 225 kilometers (140mi) north of Tver, the administrative center of the oblast. Population: 31,061(2010 Census);31,961(2002 Census);30,751(**** Census).