Costonia, Ohio
Unincorporated community in Ohio, U.S. From Wikipedia, the free encyclopedia
Unincorporated community in Ohio, U.S. From Wikipedia, the free encyclopedia
Costonia is an unincorporated community in Jefferson County, in the U.S. state of Ohio.[1]
A post office called Costonia was established in 1897, and remained in operation until 1937.[2] Besides the post office, Costonia had a country store.[3]
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