Explore Plymouth, Washington, with this interactive street and satellite map.
This page also offers TOPO MAPS — the official USGS topographic sheets — plus USGS aerial imagery, a labelled USNG grid overlay, a distance and bearing tool, and a GPS grid-reference readout. See How to Use This Map below.
This interactive map shows the street layout and satellite imagery for Plymouth, Washington. Use the Map and Satellite buttons above to switch between street map and aerial imagery views. Use the + and − buttons to zoom in or out, or scroll your mouse wheel while holding the Control key to zoom. On a touchscreen, use a two-finger pinch gesture. Drag the map to pan to any area of Washington or beyond.
Click ⛶ Fullscreen to expand the map to fill your screen. To return to the normal page view, press the Escape key, click the ✕ Exit Fullscreen button that appears above the map, or on a mobile device tap the back button (Android) or the close icon (iOS).
TOPO MAPS — NEW. Click the green 🔍 Search Maps button below the map to open a second map with a Base map row offering three choices. OSM is the standard OpenStreetMap street map. Topo shows the official USGS topographic maps from The National Map — contours, hydrography, land cover and shaded relief, the same mapping used for hiking, hunting and back-country navigation in the Adirondacks, the Catskills and the Finger Lakes. Imagery shows USGS aerial photography, mostly 1-metre NAIP. The search box finds any US town, county or landmark by name, so you are not limited to Plymouth.
Reading the map like a paper quad. Click Grid to overlay the U.S. National Grid (USNG), labelled along the edges exactly as a printed topographic sheet is — at normal zoom the squares are one kilometre across, so you can read a six-figure grid reference by eye and judge distance directly off the map. Click Measure, then tap two points, to get the distance between them together with the grid bearing in degrees and mils, the true bearing, and the magnetic bearing to set on a compass.
Click 📍 My position to take a single GPS reading from your device. It marks where you are and reports your position as a USNG grid reference as well as plain latitude and longitude — USNG being the format FEMA and US search and rescue teams work from — with a Copy position button so you can paste it straight into a text message. It takes one reading and stops, rather than tracking continuously, to conserve your battery. Note that map tiles need cell coverage, but a GPS reading does not — your coordinates stay correct even where the map itself cannot load.
| City | Plymouth |
| State | Washington (WA) |
| County | Benton County |
| Country | United States of America |
| Timezone | Pacific Time (America/Los_Angeles) |
| Latitude | 45.934577 |
| Longitude | -119.350296 |
| Population | 420 |
| Density | 18.0 /km² |
| Incorporated | N/A |
| ZIP Code | 99346 |
| Area Code | 509 |
| County Seat | Prosser |
Plymouth occupies a stark, sun-bleached expanse where the horizon stretches flat and wide under a sky of relentless clarity. It lies 21.7 miles south-southwest of Kennewick, WA (from Kennewick, WA: bearing 208°T), and is situated 7.1 miles north-northwest of Hermiston. The landscape is defined by the heavy, steady presence of the Columbia River, which pulls the earth toward its banks just a mile away, while the expansive waters of Lake Umatilla mirror the shifting colors of the afternoon. To the west, the jagged, distant silhouettes of the Cascade Range provide a faint, serrated edge to the far-off skyline, reminding the observer of the great divide between the damp forests of the coast and this arid, open basin. The air here holds a dry, clean weight, carrying the scent of parched sage and the subtle metallic tang of water moving across ancient volcanic stone.
Plymouth carries the quiet memory of a region shaped by the patient labor of agriculture and the persistent reach of the railroad. The local economy relies on the stubborn fertility of the soil, where deep-rooted orchards and fields thrive in the shadow of Fourmile Canyon, benefiting from the irrigation that allows life to flourish in this rain-shadowed terrain. Life in Plymouth follows the slow, deliberate pulse of the seasons, marked by the transformation of the fields from the pale gold of harvest to the muted browns of winter. Visitors seeking the stillness of the outdoors often gravitate toward the recreation opportunities at Lake Umatilla, finding a solitude that feels entirely removed from the clamor of more densely populated districts.
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This page provides an embedded street and satellite map of Plymouth, Washington. Coordinates: 45.934577, -119.350296. Live weather conditions are sourced directly from the National Weather Service. Real-time local and world news feeds keep the page current.
Detailed location data for Plymouth includes the ZIP code (99346), telephone area code (509), county seat of Benton County (Prosser), and school district assignment.
Search Maps opens a second, independent map. It searches OpenStreetMap for any US town, county or landmark by name; offers USGS topographic maps and USGS aerial imagery as base layers; overlays a labelled U.S. National Grid (USNG) so the map can be read like a printed topographic quad; measures distance and grid, true and magnetic bearings between any two points; and takes a single GPS fix reporting your position as a USNG grid reference and as latitude and longitude. Map tiles require cell coverage, but a GPS position does not, so the coordinates remain correct even where the map cannot load.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity. Population figures are sourced from the 2020 US Census.
| Page generated | September 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Map layers | Google Maps; © OpenStreetMap contributors; USGS The National Map topographic and aerial imagery (public domain); magnetic declination from NOAA NCEI (World Magnetic Model) |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. |