Explore Grand Coulee, Washington, with this interactive street and satellite map. You can “grab” the Grand Coulee, WA street map and move it around to re-centre it. You can change between standard map view and satellite map view by clicking the small square in the bottom left-hand corner of the map. You can use the zoom buttons on the lower right side of the map to zoom in or out to street-level detail. You will find live weather, local and world news below.
| City | Grand Coulee |
| State | Washington (WA) |
| County | Grant |
| Country | United States of America |
| Timezone | Pacific Time (America/Los_Angeles) |
| Latitude | 47.941541 |
| Longitude | -119.003355 |
| Population | 913 |
| Density | 300.2 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 99133, 99116 |
| Area Code | 509 |
| County Seat | Ephrata |
| School District | Grand Coulee Dam School District |
Grand Coulee is a locality in Grant County, Washington, United States. It is a small community with a population of 913. The population density is 300.2 people per km². Grand Coulee is located at 47.9415°N, 119.0034°W. It observes the Pacific Time (America/Los_Angeles) timezone. ZIP code: 99116.
Grand Coulee emerges from the high desert plateau like a geological revelation, a place where the earth has been rent open to reveal its immense power. It lies 14.6 miles west of Clark, WA (from Clark, WA: bearing 274°T), and is situated 28.3 miles west-northwest of Lincoln. The landscape here is one of stark beauty, defined by the colossal scar of the Grand Coulee itself, a dry channel carved by ancient glaciers and the Columbia River's former path. Jagged basalt cliffs rise with an almost brutal grandeur, their surfaces weathered into a thousand shades of ochre and gray, catching the sun in a way that makes the very rock seem to breathe. Below these imposing walls, the land flattens into a vast expanse of sagebrush and hardy grasses, punctuated by the occasional tenacious juniper, their gnarled branches reaching skyward like supplicants. The air, especially in the late afternoon, carries a dry, clean scent, tinged with the subtle perfume of sun-baked earth and wild herbs, a stark contrast to the verdant west. The story of Grand Coulee is inextricably bound to the monumental feat of human engineering that now dominates its skyline: the Grand Coulee Dam. This colossal structure, a titan of concrete and steel, was born from the ambitious vision of harnessing the Columbia River's might for irrigation and hydroelectric power, fundamentally reshaping the economy of this arid region. Prior to its construction, life in Grand Coulee was largely agrarian, a struggle against the dry climate, but the dam's arrival brought a surge of workers and a new era of prosperity, transforming it into a hub of activity. Today, the dam not only provides vital electricity but also feeds the sprawling irrigation systems that have coaxed orchards and farms to bloom across the land, creating a vibrant, if sometimes precarious, agricultural economy. The rhythm of life in Grand Coulee is still marked by the flow of water, both natural and man-made, a constant reminder of the forces that have shaped this remarkable place.
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This page provides an embedded street and satellite map of Grand Coulee, Washington — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 47.941541, -119.003355. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Grand Coulee and Grant County.
Detailed location data for Grand Coulee includes the ZIP code (99133), telephone area code (509), county seat of Grant County (Ephrata), and school district assignment (Grand Coulee Dam School District). These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Grand Coulee is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |