THE DEKALB COUNTY LAND BRIEF
Land in the
Southern Outer Piedmont setting.
DeKalb County has 267.7 square miles of land in Georgia. 2 mapped landscape regions meet across DeKalb County: Southern Outer Piedmont, Southern Inner Piedmont.
The Piedmont is a belt of irregular plains and hills between the Appalachians and the coastal plain. A complex mixture of older rocks underlies its pine and hardwood woodland landscapes.
Regional context: Piedmont ↗ · Regional mapping across the county footprint
Where the landscape changes
DeKalb County intersects 2 mapped regional units. The largest mapped shares are:
- Southern Outer Piedmont92.7%
- Southern Inner Piedmont7.3%
Finding your parcel within DeKalb County
The atlas lists 22 cities, towns, townships, and Census communities associated with DeKalb County, including Atlanta, Stonecrest, Tucker. The list includes overlapping geography types and does not divide the county into exclusive service areas.
DeKalb County by land and water
The Census records 3.42 square miles of water within DeKalb County, or 1.3% of its total area. That share is close to DeKalb County’s 1.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, DeKalb County has 1,129.4 times the land area of nearby Pine Lake city (0.24 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Clayton County, Fulton County, Gwinnett County, Henry County, Rockdale County within Georgia. A tract near one of these lines should be matched to the county identifier on its own records.

