Ryazan ) is the largest city and administrative center of Ryazan Oblast, Russia. The city is located on the Oka River in Central Russia, 196 kilometers southeast of Moscow. As of the 2010 Census, Ryazan had a population of 524,927, making it the 33rd most populated city in Russia, an increase from 521,560 in 2002. Until 1776, it was previously known as Peryslavl-Ryazansky.
