[4] Washington Township covers an area of 82.24 square miles (213.0 km2) and contains one incorporated settlement, St. Joseph (the county seat).

It contains nine cemeteries: Ashland, B'nai Sholem, Memorial Park, Mount Auburn, Mount Mora, Mount Olivet, Nelson, Ozenberger and Walnut Grove.

The streams of Candy Creek, Roys Branch and Whitehead Creek run through this township.

Washington Township contains three airports or landing strips: Butchs Strip, Mosaic Hospital West Heliport and Rosecrans Memorial Airport.

This Buchanan County, Missouri state location article is a stub.