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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Grant County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Grant County.

County State ZIP Code City Area Codes
Grant County SD 57264 Stockholm 605
Grant County SD 57265 Strandburg 605
Grant County SD 57269 Twin Brooks 605
Grant County WA 98823 Ephrata 509
Grant County WA 98824 George 509
Grant County WA 98832 Marlin 509
Grant County WA 98837 Moses Lake 509
Grant County WA 98848 Quincy 509
Grant County WA 98851 Soap Lake 509
Grant County WA 98853 Stratford 509
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.