Tatarsky District is an administrative and municipal district (raion), one of the thirty in Novosibirsk Oblast, Russia. It is located in the west of the oblast. The area of the district is 4,870 square kilometers (1,880 sq mi). Its administrative center is the town of Tatarsk. Population: 15,875 ; 19,297 (2002 census); 20,718 (1989 Soviet census).