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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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Smith County ZIP Codes

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

County State ZIP Code City Area Codes
Smith County TX 75799 Tyler 903
Deaf Smith County TX 79025 Dawn 806
Deaf Smith County TX 79045 Hereford 806
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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.