[1] Located in the eastern part of the county, it borders the following townships:[2] It lies east of the county seat of Goodland.
[3] Several intermittent headwaters of Sappa Creek flow through Washington Township.
[3] Interstate 70 and U.S. Route 24 run concurrently east–west through Washington Township.
The small K-253 connects Edson with the interstate.
A railroad line also travels east–west through Washington Township, just north of the interstate.