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
All states and U.S. territories
Maps and coordinates
State directory

Texas ZIP Codes

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

State ZIP Code City County Area Codes
TX 78589 San Juan Hidalgo County 956
TX 78590 San Perlita Willacy County 956
TX 78591 Santa Elena Starr County 361, 956
TX 78592 Santa Maria Cameron County 956
TX 78593 Santa Rosa Cameron County 956
TX 78594 Sebastian Willacy County 956
TX 78595 Sullivan City Hidalgo County 956
TX 78596 Weslaco Hidalgo County 956
TX 78597 South Padre Island Cameron County 956
TX 78598 Port Mansfield Willacy County 956
Page 195 of 267

Geographic Map of Texas

Postal context

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.