
Decatur
- County:
- DeKalb County
- County Seat:
- Yes
- Area (mi²):
- 4.606
- State:
- Georgia
Decatur is a city located in DeKalb County, Georgia. Decatur has a 2025 population of 23,907. It is also the county seat of DeKalb County. Decatur is currently declining at a rate of -0.83% annually and its population has decreased by -4.01% since the most recent census, which recorded a population of 24,907 in 2020.
The average household income in Decatur is $193,625 with a poverty rate of 5.24%. The median age in Decatur is 39.6 years: 36.7 years for males, and 41.6 years for females.