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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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Hill County ZIP Codes

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

County State ZIP Code City Area Codes
Hill County TX 76650 Irene 254
Hill County TX 76660 Malone 254
Hill County TX 76666 Mertens 254, 430, 903
Hill County TX 76673 Mount Calm 254
Hill County TX 76676 Penelope 254
Hill County TX 76692 Whitney 254
Hemphill County TX 79014 Canadian 580, 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.