Millville is an unincorporated rural hamlet in Ray County, in the U.S. state of Missouri and part of the Kansas City metropolitan area.
The community is on Missouri Route K and is approximately 8.5 miles northeast of Richmond. The East Fork of Crooked River flows past the west side of the community.[1]
Millville was platted in 1873, and named for a watermill near the original town site.[2] A post office called Millville was established in 1849, and remained in operation until 1906.[3]