As of the census[1] of 2000, there were 273 people, 115 households, and 84 families residing in the township.

25.2% of all households were made up of individuals, and 11.3% had someone living alone who was 65 years of age or older.

About 2.3% of families and 1.1% of the population were below the poverty line, including 1.4% of those under the age of eighteen and none of those 65 or over.

Des Moines Township is located in Minnesota's 1st congressional district, represented by Mankato educator Tim Walz, a Democrat.

At the state level, Des Moines Township is located in Senate District 22, represented by Republican Doug Magnus, and in House District 22B, represented by Republican Rod Hamilton.