Langhei is a name derived from Norwegian meaning "long highland".

As of the census[1] of 2000, there were 217 people, 78 households, and 63 families residing in the township.

There were 99 housing units at an average density of 2.8 per square mile (1.1/km2).

There were 78 households, out of which 32.1% had children under the age of 18 living with them, 74.4% were married couples living together, 1.3% had a female householder with no husband present, and 19.2% were non-families.

17.9% of all households were made up of individuals, and 6.4% had someone living alone who was 65 years of age or older.