Herreid is a city in Campbell County, South Dakota, United States. The population was 438 at the 2010 census. The city is named after Charles N. Herreid, who was the Governor of South Dakota when the town was founded in 1901.
According to the United States Census Bureau, the city has a total area of 1.4 square miles (3.5 km²), all of it land.
Herreid has been assigned the ZIP code 57632 and the FIPS place code 28340. U.S. Route 83 is the main thoroughfare, running from north to south through the town.