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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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Gregg County ZIP Codes

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

County State ZIP Code City Area Codes
Gregg County TX 75647 Gladewater 430, 903
Gregg County TX 75660 Judson 903
Gregg County TX 75662 Kilgore 430, 903
Gregg County TX 75663 Kilgore 903
Gregg County TX 75693 White Oak 430, 903
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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.