Lithonia, GA is in DeKalb County.

Quick Scoop: What county is Lithonia, GA in?

If you’re looking up “what county is lithonia ga in” because of mailing, moving, or school district questions, here’s the clear answer:

  • Lithonia is a city located in eastern DeKalb County, Georgia.
  • Official state and city profiles also list its county as DeKalb.

Some areas just outside Lithonia’s city limits, especially near the county line, may have a Lithonia mailing address but actually sit in neighboring counties, which is why people sometimes get confused.

Related context and “latest” local picture

  • Lithonia is a small historic city within the Atlanta metro area, roughly 18–20 miles east of downtown Atlanta.
  • It’s part of DeKalb County’s network of communities and is served by the DeKalb County School District.

So if you’re filling out forms, checking property details, or searching for local services, you’ll want to select DeKalb County for Lithonia, GA.

TL;DR: Lithonia, GA is in DeKalb County, Georgia.

Information gathered from public forums or data available on the internet and portrayed here.