Planning Your Visit
Onida is near Lake Oahe — one of the largest reservoirs in the United States stretches along the Missouri River through Sully County.
Fair Highlights
Expect livestock judging, 4-H competitions, carnival rides, and the frontier ranching community spirit of the Missouri River's central South Dakota valley.
A Closer Look
Onida is home to the Sully County Fair, which is a four-day early-August celebration in the Missouri River breaks of central South Dakota, serving one of the state's most sparsely populated ranching counties.
Heading to Sully County Fair?
Our complete packing list covers what actually makes a difference — sun protection, footwear, and the small things people forget until they need them.
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Nearby County Fairs
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