Onida, South Dakota

[8] According to the United States Census Bureau, the city has a total area of 0.64 square miles (1.66 km2), all land.

There were 331 housing units at an average density of 517.2 per square mile (199.7/km2).

The racial makeup of the city was 95.4% White, 1.8% Native American, and 2.7% from two or more races.

30.4% of all households were made up of individuals, and 9.6% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 98.51% White, 0.54% Native American, and 0.95% from two or more races.

28.8% of all households were made up of individuals, and 12.4% had someone living alone who was 65 years of age or older.