Costonia, Ohio

Costonia is an unincorporated community in Jefferson County, in the U.S. state of Ohio. 

History
A post office called Costonia was established in 1897, and remained in operation until 1937.  Besides the post office, Costonia had a country store. 

References

Category:Unincorporated communities in Jefferson County, Ohio
Category:Unincorporated communities in Ohio