Located in the eastern part of the county, it borders the following townships: •
Jackson Township - north •
Monterey Township, Putnam County - northeast •
Jennings Township, Putnam County - east •
Marion Township, Allen County - southeast •
Jennings Township - south •
York Township - southwest corner •
Ridge Township - west •
Hoaglin Township - northwest corner Part of the city of
Delphos is located in southeastern Washington Township, along the border with Allen County, and the village of
Middle Point is located in the western part of the township. Van Wert County's farthest eastern point is located in Washington Township. ==Name and history==