Buchanan is a city in Stutsman County, North Dakota, United States.

Buchanan was once home to Henry Leuhr's Giant Bull, inspired by the World's Largest Buffalo in Jamestown, North Dakota, which stood 30 feet (9.1 m) tall and was 50 feet (15 m) long until it deteriorated and was removed from its site in January 2007.

[7] According to the United States Census Bureau, the city has a total area of 0.08 square miles (0.21 km2), all land.

There were 34 housing units at an average density of 425.0 per square mile (164.1/km2).

18.8% of all households were made up of individuals, and 6.2% had someone living alone who was 65 years of age or older.

22.2% of all households were made up of individuals, and 11.1% had someone living alone who was 65 years of age or older.