Decatur, Georgia

Decatur population, 2020 to 2024

Decatur lost 422 residents from July 2020 to July 2024, a change of -1.7%. In the latest year it moved by -41. Among 148 Georgia places of 5,000 or more, that growth ranks 125th; the median place changed by +4.0%. The median place of 5,000+ in Georgia has 16,252 people, so Decatur is 1.5 times that size.

Decatur covers 4.61 square miles of land, for 5,311 people per square mile of land. The median Georgia place of 5,000+ has 1,234, so Decatur is denser than the typical town.

What county Decatur is in

All of Decatur's residents live in DeKalb County, which had 770,307 residents in 2024. Decatur holds 3.2% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Decatur

1 ZIP Code Tabulation Area (ZCTA) overlaps Decatur by at least 10% of the ZCTA's or the city's land: 30030. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Decatur is

The Census internal point of Decatur is at 33.771100, -84.295800. Atlanta, the capital, is 5.5 miles WSW in a straight line. The nearest larger place is Brookhaven, GA (59,370 people), 6.8 miles away. The nearest city of 100,000 or more is Atlanta, GA, 7.3 miles away.

Daylight in Decatur

At 33.77° N, Decatur gets about 14 h 24 min of daylight around the June solstice and 9 h 54 min around the December solstice, a swing of 4 h 30 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Decatur

The eight nearest incorporated places of 1,000+ in Georgia, measured between internal points. The closest is Avondale Estates, 1.8 miles away, with 3,526 people.