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
County directory

Dallas County ZIP Codes

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

County State ZIP Code City Area Codes
Dallas County TX 75185 Mesquite 214
Dallas County TX 75187 Mesquite 214
Dallas County TX 75201 Dallas 214, 469, 945, 972
Dallas County TX 75202 Dallas 214, 469, 945, 972
Dallas County TX 75203 Dallas 214, 469, 945, 972
Dallas County TX 75204 Dallas 214, 469, 945, 972
Dallas County TX 75205 Dallas 214, 469, 945, 972
Dallas County TX 75206 Dallas 214, 469, 945, 972
Dallas County TX 75207 Dallas 214, 469, 945, 972
Dallas County TX 75208 Dallas 214, 469, 945, 972
Page 10 of 21

Geographic Map of Dallas County

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.