Plymouth, Washington

{{Use mdy dates|date=July 2023}}

{{Infobox settlement

|official_name = Plymouth, Washington

|settlement_type = Unincorporated community

|image_skyline = Plymouth Washington - town with Columbia River in background - July 2013.JPG

|imagesize =

|image_caption = Plymouth, Washington with Columbia River in background.

|pushpin_label_position = top

|pushpin_map = USA Washington Benton County

|subdivision_type = Country

|subdivision_name = United States

|subdivision_type1 = State

|subdivision_name1 = Washington

|subdivision_type2 = County

|subdivision_name2 = Benton

|government_footnotes =

|government_type =

|leader_title =

|leader_name =

|established_title =

|established_date =

|unit_pref = Imperial

|area_footnotes =

|area_total_km2 =

|area_land_km2 =

|area_water_km2 =

|area_total_sq_mi =

|area_land_sq_mi =

|area_water_sq_mi =

|population_as_of =

|population_footnotes =

|population_total =

|population_density_km2 =

|population_density_sq_mi =

|timezone = Pacific (PST)

|utc_offset = -8

|timezone_DST = PDT

|utc_offset_DST = -7

|elevation_footnotes =

|elevation_ft = 292

|coordinates = {{coord|45|56|04|N|119|21|01|W|region:US-WA|display=inline,title}}

|postal_code_type = ZIP code

|postal_code = 99346{{cite web|url=https://www.zipdatamaps.com/99346|title=Plymouth ZIP Code|publisher=zipdatamaps.com|year=2022|access-date=November 30, 2022}}

|area_code = 509

|blank_name = GNIS feature ID

|blank_info = 1507501{{GNIS|1507501}}

|website =

|footnotes =

}}

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.{{Cite book| last = Majors | first = Harry M. | title = Exploring Washington | publisher = Van Winkle Publishing Co | year = 1975 | page = 156 |url=https://books.google.com/books?id=CoWrPQAACAAJ| isbn = 978-0-918664-00-6}}

File:Plymouth Washington as seen looking north from the mouth of hte Umatilla across the Columbia - July 2013.JPG|Plymouth, Washington as seen from the Oregon side of the Columbia River at the mouth of the Umatilla River.

File:Plymouth Washington - post office - July 2013.JPG|Plymouth, Washington post office as seen in July 2013.