City | Rank | 2026 Pop.↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Stonecrest | 1 | 61,847 | 59,282 | 0.83% | 1,654 | 37 | City |
| Brookhaven | 2 | 60,343 | 56,756 | 1.17% | 4,928 | 12 | City |
| Dunwoody | 3 | 51,870 | 51,592 | 0.15% | 3,982 | 13 | City |
| East Point | 4 | 38,201 | 38,424 | -0.06% | 2,593 | 15 | City |
| Tucker | 5 | 37,335 | 37,136 | 0.12% | 1,847 | 20 | City |
| Chamblee | 6 | 32,876 | 30,213 | 1.68% | 4,273 | 8 | City |
| Decatur | 7 | 25,213 | 24,917 | -0.25% | 5,474 | 5 | City |
| Doraville | 8 | 16,811 | 14,616 | 2.73% | 3,117 | 5 | City |
| Clarkston | 9 | 14,365 | 14,697 | -0.46% | 7,786 | 2 | City |
| Stone Mountain | 10 | 6,534 | 6,692 | -0.43% | 3,958 | 2 | City |
| Avondale Estates | 11 | 3,540 | 3,565 | -0.08% | 2,895 | 1 | City |
| Lithonia | 12 | 2,594 | 2,659 | -0.54% | 2,795 | 1 | City |
| Pine Lake | 13 | 751 | 771 | -0.53% | 3,169 | 0 | City |
Stonecrest is the largest city in DeKalb County, with a population of 61,847.
Pine Lake is the smallest city in DeKalb County, with a population of 751.
There are 13 cities in DeKalb County, Georgia.