Herreid is a city in Campbell County, South Dakota, United States.

[1] According to the United States Census Bureau, the city has a total area of 1.39 square miles (3.60 km2), all land.

[7] U.S. Route 83 is the main thoroughfare, running from north to south through the town.

40.4% of all households were made up of individuals, and 24.4% had someone living alone who was 65 years of age or older.

There were 234 housing units at an average density of 173.0 per square mile (66.8/km2).

32.9% of all households were made up of individuals, and 19.3% had someone living alone who was 65 years of age or older.