U.S. postal lookup

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.

42,735 verified records
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Texas ZIP Codes

Complete postal directory, details, and geographic map for the State of Texas.

State ZIP Code City County Area Codes
TX 77857 Gause Milam County 254, 512, 737, 979
TX 77859 Hearne Robertson County 254, 512, 737, 936, 979
TX 77861 Iola Grimes County 936, 979
TX 77862 Kurten Brazos County 979
TX 77863 Lyons Burleson County 979
TX 77864 Madisonville Madison County 430, 903, 936
TX 77865 Marquez Leon County 430, 903, 936, 979
TX 77866 Millican Brazos County 936, 979
TX 77867 Mumford Robertson County 512, 737, 979
TX 77868 Navasota Grimes County 936, 979
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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.