DeKalb County, Georgia

County seat: Decatur · Population 774,394 (2025) · 268 sq mi

DeKalb County is the 4th most populous of Georgia's 159 counties, with 774,394 people (2025 estimate). Its county seat is Decatur. It is part of the Atlanta region, one of the 12 Georgia Regional Commissions. The map shows its 13 cities and towns and the 5 neighboring counties.

Map of DeKalb County, Georgia with cities, towns and the county boundary
DeKalb County, Georgia with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
Download PDF (Letter) 142 KBPNG image 115 KBGeorgia county map

DeKalb County facts

County seat
Decatur
Population (2025 estimate)
774,394 +1.3% since 2020
Land area
268 sq mi 113th largest of 159
Water area
3 sq mi
Population density
2,893 per sq mi
Established
1822
Named after
Johann de Kalb American general (1721-1780)
Largest city
Stonecrest 61,337
Median household income
$80,644
Cities and towns
13 plus 9 CDPs
ZIP codes
36
Time zone
Eastern
FIPS code
13089

Cities and towns in DeKalb County

DeKalb County has 13 incorporated cities, towns and villages. Populations count the people living inside DeKalb County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
StonecrestCity61,337
BrookhavenCity59,643
DunwoodyCity51,792
AtlantaCity43,340Fulton County
TuckerCity37,290
ChambleeCity32,334
Decatur (county seat)City25,276
DoravilleCity16,324Gwinnett County
ClarkstonCity14,431
Stone MountainCity6,562
Avondale EstatesCity3,543
LithoniaCity2,608
Pine LakeCity755

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Redan31,017
Candler-McAfee20,905
North Decatur18,442
North Druid Hills17,997
Belvedere Park14,181
Scottdale10,542
Panthersville9,053
Druid Hills8,169
Gresham Park6,935

ZIP codes in DeKalb County

36 ZIP codes reach into DeKalb County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of DeKalb County, 2020–2025

DeKalb County grew by 9,936 people (+1.3%) between April 2020 and July 2025: 22,229 more births than deaths and a net loss of 11,956 people from migration.

Year (July 1)Population
2020764,585
2021759,708
2022764,752
2023768,424
2024772,584
2025774,394

Neighboring counties

Printable DeKalb County map

The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.

Paste this code to embed the map on your site:

Sources

Back to the Georgia county map with all 159 counties. Found an error? Tell us.