Fort Jefferson

Fort Jefferson Picture

Fort Jefferson park and monument marks the site of an advance outpost of General Arthur St. Clair, built in October 1791. It was named in honor of Thomas Jefferson, then Secretary of State. One of a chain of defensive forts built to protect army supplies from Indians, it served as a supply base throughout the campaigns of General St. Clair and General Anthony Wayne. It was abandoned in 1796.

The monument is made of faced granite field boulders, six feet square and twenty-feet tall. The area is maintained as a roadside park with a picnic shelter and grills. No part of the fort remains.


Open All Year/Daylight Hours




Fort Jefferson is on County Road 24 at State Route 121, four miles south of Greenville in the city of Fort Jefferson in Darke County.

General Information

Fort Jefferson
c/o Site Operations Department
The Ohio Historical Society
1982 Velma Avenue
Columbus, OH 43211

Phone: 614-297-2630
1-800-686-1535(toll free)

Hamdicapped Accessibility

Site is PARTIALLY handicapped accessible.

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