Summit is a town in Roberts County, South Dakota, United States.

[6] Summit was laid out in 1892, and was so named on account of the town site's lofty elevation.

[7] According to the United States Census Bureau, the town has a total area of 0.56 square miles (1.45 km2), all land.

The racial makeup of the town was 83.63% White, 14.23% Native American, and 2.14% from two or more races.

About 28.2% of families and 34.9% of the population were below the poverty line, including 37.9% of those under the age of eighteen and 50.9% of those 65 or over.

[13][14] Intercity bus service to the town is provided by Jefferson Lines.