Williamstown, Ohio
![](../I/m/OHMap-doton-Williamstown.png)
![](../I/m/Williamstown%2C_Ohio.jpg)
Coming into Williamstown from the south.
Williamstown is an unincorporated community in southern Madison Township, Hancock County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 45897.[1] It lies at the intersection of U.S. Routes 30 and 68.
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