Walhalla is a city in Pembina County, North Dakota, United States.

[6] Walhalla is the second oldest town in North Dakota, its history bound up in the fur trade of the Red River Valley.

[7] One mile northeast of town was the North West Company fur trading post, established in 1797 by British-Canadian surveyor and cartographer David Thompson (1770–1857), and in 1801 moved to a site one mile east of Walhalla, where a reconstructed building is now located.

[14] The town was the site of a protest against TransCanada's Keystone Pipeline in October 2016, when documentarian Deia Schlosberg was arrested.

There were 515 housing units at an average density of 490.5 per square mile (189.4/km2).

36.4% of all households were made up of individuals, and 16.8% had someone living alone who was 65 years of age or older.

36.1% of all households were made up of individuals, and 21.9% had someone living alone who was 65 years of age or older.

The nearby communities of Langdon and Cavalier continue to have weekly newspapers.

This climatic region is typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters.