Keystone (previously known as Keystone Station) is an unincorporated community in Bloomfield Township, Jackson County, Ohio, United States.

It is located south of the city of Jackson, at the intersection of Franklin Valley Road and Keystone Station Road, at 38°59′17″N 82°36′33″W / 38.98806°N 82.60917°W / 38.98806; -82.60917.

The furnace itself is still standing at 39°00′36″N 82°26′55″W / 39.01000°N 82.44861°W / 39.01000; -82.44861,[4] and is listed on the National Register of Historic Places.

The name was changed to Keystone Post Office on October 1, 1849, and the branch was discontinued on July 16, 1853.

This Jackson County, Ohio state location article is a stub.