Yaya, Russia  Yaya () is an urban locality (an urban-type settlement) and the administrative center of Yaysky District of Kemerovo Oblast, Russia, located on the Yaya River (Chulym's tributary), north of Kemerovo. Population: . It was founded in 1897 as the "selo" of Zharkovka () and was granted urban-type settlement status in 1934. Dialing code: +7 38441; postal code: 652100.