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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 30033 Decatur 404, 470, 678, 770, 943
DeKalb County GA 30034 Decatur 404, 470, 678, 770, 943
DeKalb County GA 30035 Decatur 404, 470, 678, 770, 943
Dekalb County GA 30036 Decatur 404
Dekalb County GA 30037 Decatur 404
DeKalb County GA 30038 Lithonia 404, 470, 678, 770, 943
DeKalb County GA 30058 Lithonia 470, 678, 770, 943
DeKalb County GA 30072 Pine Lake 404, 470, 678, 943
Dekalb County GA 30073 Decatur 404
Dekalb County GA 30074 Redan 678
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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.