Oroqen Autonomous Banner is an autonomous banner that lies directly south of the urban district of Hailar in the prefecture-level city of Hulunbuir. It covers an area of 60,378 square kilometres (23,312 sq mi). As of the 2010 census, there were 223,752 inhabitants with a population density of 4.84 inhabitants per km2.

Hulunbuir or Hulun Buir is a region that is governed as a prefecture-level city in northeastern Inner Mongolia, China. Its administrative center is located at Hailar District, its largest urban area. Major scenic features are the high steppes of the Hulun Buir grasslands, the Hulun and Buir lakes, and the Khingan range. Hulun Buir borders Russia to the north and west, Mongolia to the south and west, Heilongjiang province to the east and Hinggan League to the direct south. Hulunbuir is a linguistically diverse area: next to Mandarin Chinese, Mongolian dialects such as Khorchin and Buryat, the Mongolic language Daur, and some Tungusic languages, including Oroqen and Solon, are spoken there.