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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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Gwinnett County ZIP Codes

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

County State ZIP Code City Area Codes
Gwinnett County GA 30092 Peachtree Corners 470, 678, 770, 943
Gwinnett County GA 30093 Norcross 470, 678, 770, 943
Gwinnett County GA 30095 Duluth 678
Gwinnett County GA 30096 Duluth 470, 678, 770, 943
Gwinnett County GA 30098 Duluth 678
Gwinnett County GA 30099 Duluth 678
Gwinnett County GA 30515 Buford 678
Gwinnett County GA 30518 Buford 470, 678, 770, 943
Gwinnett County GA 30519 Buford 470, 678, 770, 943
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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.