Alledonia is an unincorporated community in central Washington Township, Belmont County, Ohio, United States.[1] It has a post office with the ZIP code 43902.[2] It lies along State Route 148.
![Location of Alledonia, Ohio](http://up.wiki.x.io/wikipedia/commons/b/be/OHMap-doton-Alledonia.png)
Alledonia is part of the Wheeling, WV-OH Metropolitan Statistical Area.
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39°53′55″N 80°58′09″W / 39.89861°N 80.96917°W