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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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Harris County ZIP Codes

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

County State ZIP Code City Area Codes
Harris County TX 77411 Alief 713
Harris County TX 77413 Barker 713
Harris County TX 77429 Cypress 281, 346, 713, 832
Harris County TX 77433 Cypress 281, 346, 713, 832, 936
Harris County TX 77447 Hockley 281, 346, 713, 832, 936
Harris County TX 77449 Katy 281, 346, 713, 832
Harris County TX 77450 Katy 281, 346, 713, 832
Harris County TX 77493 Katy 281, 346, 713, 832, 936
Harris County TX 77501 Pasadena 713
Harris County TX 77502 Pasadena 281, 346, 713, 832
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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.