Menno is a city in Hutchinson County, South Dakota, United States.

[7] According to the United States Census Bureau, the city has a total area of 0.52 square miles (1.35 km2), all land.

There were 327 housing units at an average density of 628.8 per square mile (242.8/km2).

The racial makeup of the city was 98.7% White, 0.5% Native American, and 0.8% from two or more races.

37.2% of all households were made up of individuals, and 21.4% had someone living alone who was 65 years of age or older.

35.3% of all households were made up of individuals, and 25.2% had someone living alone who was 65 years of age or older.

Humid continental climate is a climatic region typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters.