The southern part of Indian Lake is located in northern Washington Township.

[6] On the shores of Dunns Pond (in northern Washington Township)[7] is a Native American mound, the Dunns Pond Mound, which was built at some point between 300 BC and AD 600.

The mound is listed on the National Register of Historic Places.

[8] The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1.

Other significant highways in Washington Township include State Routes 47, 235, 274, 366, 368, 708, and 720.