Williamsport is an unincorporated community in northwestern Madison Township, Columbiana County, Ohio, United States.

[1] A post office called Park was established in 1890, and remained in operation until 1902.

[3] Williamsport is home to the Beaver Local School District.

The confluence that forms the Little Beaver Creek is in the center of the community.

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