Evidence of human habitation in present-day Otog Banner dates back to the Neolithic era, when the area was inhabited by the Hetao people (Chinese: 河套人; pinyin: Hétào rén).

[2] During the Spring and Autumn period, the Quyan [zh] and other nomadic tribes lived on the southwestern edge of present-day Otog Banner.

[2] In 407 CE, Helian Bobo established the Great Xia, which administered present-day Otog Banner.

[2] In the Yuan Dynasty, all but the western portion of the area belonged to Ningxiafu Circuit [zh], while the rest became the fiefdom of Chaghan Nur (Chinese: 察罕脑尔; pinyin: Cháhǎn Nǎo'ěr).

[2] In 1462, Mongols resettled in Ordos, and in 1500, Dayan Khan restored the Wanhu organization, bringing the area under the control of Bars Bolud Jinong.

[2] On August 23, 1949, the People's Liberation Army took control of present-day Otog Banner, and by September 7, a provisional Communist Party government was established.

[4] As of 2019, Otog Banner had a gross domestic product (GDP) of 36.036 billion renminbi (RMB), a 8.4% increase from the previous year.

[7]: 20–93 The per capita disposable income for residents of Otog Banner is 37,973 RMB as of 2019, a 7.4% increase from the previous year.

[7]: 20–93  Urban residents of Otog Banner average a disposable income of 48,994 RMB,[7]: 20–93  which ranks 4th among the 101 county-level divisions of Inner Mongolia which reported this data in 2019.

[7]: 20–5  Rural residents average 20,244 RMB of disposable income,[7]: 20–93  which ranks 24th among the 90 county-level divisions of Inner Mongolia which reported this data in 2019.