Washington Center is an unincorporated community in west central Harrison County, in the U.S. state of Missouri.
The community is located at the intersection of Missouri routes M and D approximately 5.5 miles north of Martinsville.Big Muddy Creek flows past one mile to the west of the community.[1]
A post office called Washington Centre was established in 1878, and remained in operation until 1904.[2] The community lies near the center of Washington Township, hence the name.[3]