Yershovsky District is an administrative and municipal district (raion), one of the thirty-eight in Saratov Oblast, Russia. It is located in the eastern central part of the oblast. The area of the district is 4,300 square kilometers (1,700 sq mi). Its administrative center is the town of Yershov. Population: 41,609 ; 50,337 (2002 census); 53,333 (1989 Soviet census). The population of Yershov accounts for 51.5% of the district's total population.