If you spend any time in metro Atlanta, you’ll hear DeKalb County mentioned a lot. That leads many people to wonder: is DeKalb County in Atlanta, or is Atlanta in DeKalb County?
The short answer:
Atlanta is a city that spans multiple counties, and part of the City of Atlanta is in DeKalb County.
But DeKalb County itself is much larger than just the Atlanta portion.
Understanding how this works is important for taxes, schools, voting, city services, and mailing addresses if you live in or are moving to the Atlanta area.
Atlanta is a city.
DeKalb is a county.
In Georgia, cities and counties are separate layers of government. They often overlap.
So you can have:
This is where a lot of confusion comes from.
Only the western portion of DeKalb County is inside the Atlanta city limits. This includes several well-known neighborhoods and areas, such as:
If you’re unsure whether a specific address is in City of Atlanta–DeKalb County or just unincorporated DeKalb (or another city), the city boundary line can cut down the middle of streets and even through blocks.
Here’s a simple breakdown to keep things straight:
| Question | Answer |
|---|---|
| Is all of DeKalb County in Atlanta? | No. Most of DeKalb County is outside the City of Atlanta. |
| Is part of Atlanta in DeKalb County? | Yes. A sizeable part of eastern Atlanta is in DeKalb County. |
| Is Atlanta only in DeKalb County? | No. Atlanta is mainly in Fulton County and partly in DeKalb County. |
| Can you live in DeKalb but not in Atlanta? | Yes. Many DeKalb cities and unincorporated areas are not Atlanta. |
| Can you have an “Atlanta” address but not be in the City of Atlanta? | Yes. Postal addresses don’t always match city limits exactly. |
For relocation, taxes, schools, and voting, the key question is not just “Is this in DeKalb?” but:
Here are practical ways to check:
If you own or are buying a home, the county tax records will typically show:
You can search by address on the DeKalb County Tax Commissioner’s or Property Appraisal website to see how the property is classified.
If your address is inside the City of Atlanta (even the DeKalb side), some services may be provided by Atlanta city departments rather than DeKalb or another city:
If you’re outside Atlanta city limits (but in DeKalb County), services may be from:
If you’re still unsure, you can contact local government offices:
City of Atlanta – ATL 311 (Non-Emergency Customer Service)
Phone: 3-1-1 (within city) or (404) 546-0311
They can help confirm if your address is in City of Atlanta and what services you should expect.
DeKalb County Government – General Information
Main Line: (404) 371-2000
You can ask whether a specific address is inside a city (like Atlanta, Decatur, Brookhaven) or in unincorporated DeKalb.
If your home is in City of Atlanta–DeKalb County, you may pay:
If you live in unincorporated DeKalb or another city like Decatur or Brookhaven, your tax mix will be different.
Most of DeKalb County is served by DeKalb County School District. However, some cities have their own school systems:
Your exact school zone depends on both:
Families moving to the Atlanta area often double-check school district maps with the relevant district office.
Your exact location determines:
Someone in Atlanta–DeKalb may vote for:
Location affects which agencies respond to your 911 calls:
Inside City of Atlanta (DeKalb side):
Usually Atlanta Police and Atlanta Fire Rescue
In unincorporated DeKalb or another DeKalb city:
Typically DeKalb County Police and DeKalb County Fire Rescue, or that city’s departments where they exist (for example, Decatur, Brookhaven, Dunwoody).
That can happen. The U.S. Postal Service uses city names for mailing, but that doesn’t always match official city boundaries.
Your address might:
Parts of East Atlanta Village and surrounding neighborhoods are firmly within City of Atlanta–DeKalb County. However, a short drive away you can cross into areas that are still DeKalb County but not inside the City of Atlanta.
The only way to know for sure is to:
You definitely live in DeKalb County, but you might or might not be in the City of Atlanta. Many residents:
If you’re trying to sort out where you fall and what to do next, these offices are good starting points:
DeKalb County Government
1300 Commerce Drive
Decatur, GA 30030
Main Line: (404) 371-2000
DeKalb County Tax Commissioner
4380 Memorial Drive
Decatur, GA 30032
Phone: (404) 298-4000
City of Atlanta – City Hall
55 Trinity Avenue SW
Atlanta, GA 30303
ATL 311: 3-1-1 (inside city) or (404) 546-0311
These offices can help you understand:
If you’re planning a move, signing a lease, or buying a home in the Atlanta area, it’s worth taking a few minutes to confirm whether your future address is City of Atlanta–DeKalb, another city in DeKalb County, or unincorporated DeKalb, so you know exactly how life, services, and costs will work in your new neighborhood.
