Shchyolkovo (Russian:Щёлково) is a city and the administrative center of Shchyolkovsky District in Moscow Oblast, Russia, located on the Klyazma River (Oka's tributary), 20 kilometers (12mi) northeast of Moscow. Population: 110,411(2010 Census); 112,865 (2002 Census); 109,255 (**** Census); 91,000 (1977).