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Grant County, Washington
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Grant County, Washington Map
A detailed map of Grant County. Click on a nearby County to view more information about that County. County boundaries are from the U.S. Census Bureau's 2025 TIGER/Line files.
Map of Counties in Washington
An interactive map of Counties in Washington. Click on a County to view more information about that County. County boundaries are from the U.S. Census Bureau's 2025 TIGER/Line files.
About Grant County, Washington
Grant County is a county located in the U.S. state of Washington. As of the 2020 census, the population was 99,123. The county seat is Ephrata, and the largest city is Moses Lake. The county was formed out of Douglas County in February 1909 and is named for U.S. President Ulysses S. Grant.
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Snow Totals in Grant County, Washington
See recent snowfall, snow depth, and records for each city and town in Grant County, Washington.
About this data
- State and county boundaries
- TIGER/Line Shapefiles: States, Counties and ZIP Code Tabulation Areas (2025), U.S. Census Bureau. Boundaries of states, counties and ZIP Code Tabulation Areas, the Census Bureau's areas for ZIP codes. Updated
- County subdivision boundaries
- TIGER/Line Shapefiles: County Subdivisions and Places (2024), U.S. Census Bureau. Boundaries of towns, townships, cities and villages. Updated
- County list
- Cartographic Boundary Files: Counties (2024), U.S. Census Bureau. County names and extents, with Wikipedia links from Wikidata. Updated