Monroe is a town in Turner County, South Dakota, United States.

[8] A post office called Monroe was established in 1890, and remained in operation until it was discontinued in 1965.

[9] According to the United States Census Bureau, the town has a total area of 0.38 square miles (0.98 km2), all land.

22.1% of all households were made up of individuals, and 8.9% had someone living alone who was 65 years of age or older.

27.1% of all households were made up of individuals, and 14.3% had someone living alone who was 65 years of age or older.

About 1.9% of families and 10.4% of the population were below the poverty line, including 9.8% of those under the age of eighteen and 24.2% of those 65 or over.