Alexandria is a city in central Hanson County, South Dakota, United States.

[9] According to the United States Census Bureau, the city has a total area of 0.62 square miles (1.61 km2), all land.

[10] Alexandria is part of the Mitchell, South Dakota Micropolitan Statistical Area.

There were 249 housing units at an average density of 401.6 per square mile (155.1/km2).

23.8% of all households were made up of individuals, and 9.9% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 99.29% White, 0.18% Native American, 0.18% Asian, and 0.36% from two or more races.

34.2% of all households were made up of individuals, and 20.1% had someone living alone who was 65 years of age or older.