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U.S. ZIP Codes Database 2026

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Collin County ZIP Codes

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

County State ZIP Code City Area Codes
Collin County TX 75070 Mckinney 214, 469, 945, 972
Collin County TX 75071 Mckinney 214, 430, 469, 903, 945, 972
Collin County TX 75072 Mckinney 214, 469, 945, 972
Collin County TX 75074 Plano 214, 469, 945, 972
Collin County TX 75075 Plano 214, 469, 945, 972
Collin County TX 75078 Prosper 214, 469, 940, 945, 972
Collin County TX 75082 Richardson 214, 469, 945, 972
Collin County TX 75086 Plano 214
Collin County TX 75093 Plano 214, 469, 945, 972
Collin County TX 75094 Plano 214, 469, 945, 972
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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.