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| City | Moses Lake |
| State | Washington (WA) |
| County | Grant |
| Country | United States of America |
| Timezone | Pacific Time (America/Los_Angeles) |
| Latitude | 47.130142 |
| Longitude | -119.278077 |
| Population | 26,083 |
| Density | 544.9 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 98837 |
| Area Code | 509 |
| County Seat | Ephrata |
| School District | Moses Lake School District |
Moses Lake is a locality in Grant County, Washington, United States. It has a population of 26,083. The population density is 544.9 people per km². Moses Lake is located at 47.1301°N, 119.2781°W. It observes the Pacific Time (America/Los_Angeles) timezone. ZIP code: 98837.
Moses Lake lies in a broad, sun-drenched basin, an expanse of sagebrush steppe punctuated by the shimmering, cerulean presence of the lake itself. It lies 35.2 miles north-north-east of Pierce, WA (from Pierce, WA: bearing 13°T), and is situated 2.4 miles east of Cascade Valley. The land here rolls with a gentle, arid grace, its palette dominated by the muted greens and browns of dry grasses and hardy shrubs, all under a sky that often feels impossibly vast. The air, particularly in the late afternoons, carries a dry, warm kiss, tinged with the faint, earthy scent of the desert floor and the distant promise of irrigation. This is a place where the horizon seems to stretch into infinity, a land waiting for the touch of water to reveal its latent fertility. The history of Moses Lake is deeply entwined with the Columbia River Basin Project, a monumental undertaking that transformed this arid landscape into a breadbasket. The lake, once a smaller, natural body, was significantly enlarged by the project, its waters now a vital resource for the surrounding agricultural lands that produce a bounty of potatoes, corn, and alfalfa. The town itself grew alongside this agricultural expansion, becoming a hub for farming operations and related industries. Beyond its agricultural roots, Moses Lake has also cultivated a reputation for its aerospace industry, a testament to the long, straight runways left over from its past as a military airbase, now repurposed for aircraft manufacturing and testing. The rhythm of daily life here is one of purposeful industry, punctuated by the quiet beauty of the lake, a constant source of recreation and a defining feature of this unique corner of Grant County.
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This page provides an embedded street and satellite map of Moses Lake, Washington — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 47.130142, -119.278077. 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 Moses Lake and Grant County.
Detailed location data for Moses Lake includes the ZIP code (98837), telephone area code (509), county seat of Grant County (Ephrata), and school district assignment (Moses Lake 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 Moses Lake 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. |