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U.S. ZIP Codes Database 2026

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Dekalb County ZIP Codes

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

County State ZIP Code City Area Codes
DeKalb County GA 30317 Atlanta 404, 470, 678, 943
DeKalb County GA 30319 Atlanta 404, 470, 678, 770, 943
DeKalb County GA 30322 Atlanta 404, 470, 678, 943
DeKalb County GA 30329 Atlanta 404, 470, 678, 770, 943
DeKalb County GA 30338 Atlanta 470, 678, 770, 943
DeKalb County GA 30340 Atlanta 470, 678, 770, 943
DeKalb County GA 30341 Atlanta 404, 470, 678, 770, 943
DeKalb County GA 30345 Atlanta 404, 470, 678, 770, 943
DeKalb County GA 30346 Atlanta 470, 678, 770, 943
DeKalb County GA 30360 Atlanta 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.