Plymouth, Washington

Plymouth is an unincorporated community in Benton County, Washington, United States. Plymouth is located on the Columbia River across from Umatilla, Oregon. It is south of the Tri-Cities and is served by Interstate 82. It was named by early settlers who felt a nearby rock promontory resembled Plymouth Rock.^[3]

• 
  Plymouth, Washington as seen from the Oregon side of the Columbia River at the mouth of the Umatilla River.
• 
  Plymouth, Washington post office as seen in July 2013.

Plymouth, Washington
Unincorporated community
Plymouth, Washington with Columbia River in background.
Plymouth, Washington
Coordinates: 45°56′04″N 119°21′01″W
Country	United States
State	Washington
County	Benton
Elevation [1]	292 ft (89 m)
Time zone	UTC-8 (Pacific (PST))
• Summer (DST)	UTC-7 (PDT)
ZIP code	99346[2]
Area code	509
GNIS feature ID	1507501[1]