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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 77013 Houston 281, 346, 713, 832
Harris County TX 77014 Houston 281, 346, 713, 832
Harris County TX 77015 Houston 281, 346, 713, 832
Harris County TX 77016 Houston 281, 346, 713, 832
Harris County TX 77017 Houston 281, 346, 713, 832
Harris County TX 77018 Houston 281, 346, 713, 832
Harris County TX 77019 Houston 281, 346, 713, 832
Harris County TX 77020 Houston 281, 346, 713, 832
Harris County TX 77021 Houston 281, 346, 713, 832
Harris County TX 77022 Houston 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.