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 78622 Fentress Caldwell County 512, 737, 830
TX 78623 Fischer Comal County 512, 737, 830
TX 78624 Fredericksburg Gillespie County 325, 830
TX 78626 Georgetown Williamson County 512, 737
TX 78627 Georgetown Williamson County 512
TX 78628 Georgetown Williamson County 512, 737
TX 78629 Gonzales Gonzales County 361, 830
TX 78630 Cedar Park Williamson County 512
TX 78631 Harper Gillespie County 325, 830
TX 78632 Harwood Gonzales County 830
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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.