Kadom

Kadomsky District (Russian: Ка́домский райо́н) is an administrative and municipal district (raion), one of the twenty-five in Ryazan Oblast, Russia. It is located in the east of the oblast. The area of the district is 986 square kilometers (381 sq mi). Its administrative center is the urban locality (a work settlement) of Kadom. Population: 8,494 (2010 Census); 10,708 (2002 Census); 14,328 (1989 Soviet census). The population of Kadom accounts for 64.5% of the district's total population.

https://en.wikipedia.org/wiki/Kadomsky District