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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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Herkimer County ZIP Codes

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

County State ZIP Code City Area Codes
Herkimer County NY 13416 Newport 315, 680
Herkimer County NY 13420 Old Forge 315, 680
Herkimer County NY 13431 Poland 315, 680
Herkimer County NY 13454 Salisbury Center 315, 680
Herkimer County NY 13472 Thendara 315, 680
Herkimer County NY 13475 Van Hornesville 315, 607, 680
Herkimer County NY 13491 West Winfield 315, 607, 680
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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.