Sentinel Butte is a city in Golden Valley County, North Dakota, United States.

[3] Sentinel Butte was founded in 1902 along the transcontinental rail line of the Northern Pacific Railway.

The name comes from the prominent butte (3,428 ft [1,045 m]) three miles (5 km) to the south.

This geographical feature was named in honor of two Arikara sentinels killed nearby in 1864 by the Sioux.

40.0% of all households were made up of individuals, and 20% had someone living alone who was 65 years of age or older.

There were 16.7% of families and 18.2% of the population living below the poverty line, including no under eighteens and 26.7% of those over 64.