Grand Coulee, Washington — interactive Google street map, satellite and terrain views, Street View, live National Weather Service conditions and 7-day forecasts, real-time local and world news, and an editorial description of Grand Coulee, Grant County.
| 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 lies etched against a backdrop of stark, sun-baked basalt, where the scablands tell a story of ancient floods and powerful forces. It lies 14.6 miles west of Clark, WA (from Clark, WA: bearing 274°T), and is situated 2.1 miles south-west of Coulee Dam. The air, dry and carrying the scent of sagebrush, shimmers with a persistent heat, even as the vast expanse of the Columbia River, tamed and channeled, reflects the immense sky. Eroded coulees, remnants of glacial meltwater's fury, carve deep shadows into the landscape, their sheer walls a testament to geological time. The light here, especially as evening draws in, possesses a peculiar clarity, sharpening the edges of the distant mountains and painting the sky in hues of ochre and rose. It is a place where the land feels both immense and intimately sculpted, a raw beauty born of upheaval. The heart of Grand Coulee beats with the rhythm of its colossal dam, a monument of human ambition that transformed this arid land into a powerhouse and an agricultural oasis. The economy, once dominated by the monumental construction project, now thrives on the bounty of irrigated fields, where orchards and vineyards flourish, and on the steady hum of hydroelectric generation. The reservoir it created, Banks Lake, offers a surprising aquatic respite, its shores dotted with recreation areas, a stark contrast to the surrounding desert. History whispers in the wind that sweeps across the coulees, a narrative of pioneers, engineers, and the enduring spirit of those who chose to build and thrive in this challenging, yet profoundly rewarding, corner of the world.
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This page provides an interactive Google map of Grand Coulee, Washington with street, satellite and terrain views and integrated Street View imagery. 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 | June 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. |