St. Mary’s County Fairgrounds

Leonardtown, MD

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U.S. National Oyster Festival in St. Mary's County: Street Fairs & Community Festivals in Leonardtown, Maryland (block fair scene)

U.S. National Oyster Festival in St. Mary's County

St. Mary’s County Fairgrounds · Leonardtown

Sat, Oct 17 – Sun, Oct 18

Hours: Saturday 10am–6pm, Sunday 11am–6pm

Dates underway · Check daily hours

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Sources

Facts on this page trace to these 3 sources — last retrieved Oct 11, 2026.