The city derives its name from the Ojibway (Chippewa) language, in which Nami means sturgeon.

As of the census[1] of 2000, there were 499 people, 221 households, and 154 families residing in the township.

There were 603 housing units at an average density of 3.6 per square mile (1.4/km2).

There were 221 households, out of which 19.9% had children under the age of 18 living with them, 63.8% were married couples living together, 3.6% had a female householder with no husband present, and 30.3% were non-families.

27.1% of all households were made up of individuals, and 16.3% had someone living alone who was 65 years of age or older.