U.S. postal lookup

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.

42,735 verified records
All states and U.S. territories
Maps and coordinates
County directory

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 30079 Scottdale 404, 470, 678, 943
DeKalb County GA 30083 Stone Mountain 404, 470, 678, 770, 943
DeKalb County GA 30084 Tucker 404, 470, 678, 770, 943
Dekalb County GA 30085 Tucker 678
Dekalb County GA 30086 Stone Mountain 404
DeKalb County GA 30087 Stone Mountain 470, 678, 770, 943
DeKalb County GA 30088 Stone Mountain 404, 470, 678, 770, 943
DeKalb County GA 30294 Ellenwood 404, 470, 678, 770, 943
DeKalb County GA 30307 Atlanta 404, 470, 678, 943
DeKalb County GA 30316 Atlanta 404, 470, 678, 943
Page 4 of 9

Geographic Map of DeKalb County

Postal context

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.