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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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County directory

Fall River County ZIP Codes

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

County State ZIP Code City Area Codes
Fall River County SD 57735 Edgemont 307, 308, 605
Fall River County SD 57747 Hot Springs 605
Fall River County SD 57763 Oelrichs 308, 605
Fall River County SD 57766 Oral 605
Fall River County SD 57782 Smithwick 605

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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.