[1] In 1990, Oakport Township reached an orderly annexation agreement whereby developed portions of the Township (Tract 2) entered the city of Moorhead on January 1, 2015.

[5] According to the United States Census Bureau, the township has a total area of 29.2 square miles (75.5 km2), all land.

As of the census of 2020, there were 506 people, 206 households, and 181 families residing in the township.

As of the census of 2000, there were 1,689 people, 572 households, and 498 families residing in the township.

11.5% of all households were made up of individuals, and 4.4% had someone living alone who was 65 years of age or older.