Starozhilovsky District is an administrative and municipal district (raion), one of the twenty-five in Ryazan Oblast, Russia. It is located in the center of the oblast. The area of the district is 1,007 square kilometers (389 sq mi). Its administrative center is the urban locality of Starozhilovo. Population: 17,136 ; 17,954 (2002 census); 17,762 (1989 Soviet census). The population of Starozhilovo accounts for 29.7% of the district's total population.