Cromwell is an unincorporated community in Pierce County, in the U.S. state of Washington.[1]
A post office called Cromwell was established in 1903, and remained in operation until 1931.[2] The community was named after J. B. Cromwell, a postal official.[3]
47°16′27″N 122°37′20″W / 47.27417°N 122.62222°W