Pioneer Post Office was located in the SE corner of Jackson County about 4 miles NW of Parker Mt. near where South Parker Road now runs into State Highway 66 in the vicinity of Pinehurst. The little community was named for the pioneers of the Applegate Trail.
When Pioneer's post office was closed, southeastern county area residents received their mail from Jacksonville, the county seat for fourteen years until Shake got a post office.
Where did they go? Following the mail trail of the DPOs of Jackson County, Oregon (SHS 979.5281 S93 2013)