Decatur is a city located in the state of Georgia within the United States. It serves as the county seat of DeKalb County and is situated as part of the Atlanta metropolitan area.
As of the 2020 census, the municipality has a population of 24,928. Although it is sometimes assumed to be larger in size, this perception often stems from multiple ZIP codes in unincorporated DeKalb County that use Decatur as their address.