Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Savannah | 1 | 147,845 | 147,456 | 0.07% | 1,358 | 108.9 | City |
| Pooler | 2 | 30,833 | 25,676 | 4.36% | 1,113 | 27.7 | City |
| Port Wentworth | 3 | 15,652 | 10,916 | 8.18% | 974 | 16.1 | City |
| Wilmington Island | 4 | 15,251 | 15,607 | 0.05% | 1,837 | 8.3 | CDP |
| Garden City | 5 | 10,363 | 10,403 | -0.1% | 724 | 14.3 | City |
| Skidaway Island | 6 | 9,450 | 8,846 | 0.84% | 573 | 16.5 | CDP |
| Whitemarsh Island | 7 | 6,790 | 7,264 | 0% | 1,168 | 5.8 | CDP |
| Montgomery | 8 | 4,620 | 5,323 | 0.15% | 886 | 5.2 | CDP |
| Henderson | 9 | 3,231 | 2,694 | 3.62% | 1,861 | 1.7 | CDP |
| Bloomingdale | 10 | 3,211 | 2,883 | 2.62% | 229 | 14.0 | City |
| Tybee Island | 11 | 3,122 | 3,108 | 0.1% | 1,084 | 2.9 | City |
| Thunderbolt | 12 | 2,535 | 2,551 | -0.16% | 1,888 | 1.3 | Town |
| Isle Hope | 13 | 2,093 | 2,194 | -1.04% | 1,067 | 2.0 | CDP |
| Dutch Island | 14 | 1,270 | 1,338 | 0.08% | 516 | 2.5 | CDP |
| Talahi Island | 15 | 1,174 | 1,224 | -0.51% | 912 | 1.3 | CDP |
| Vernonburg | 16 | 141 | 139 | 0% | 350 | 0.4 | Town |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Savannah is the largest city in Chatham County.
Vernonburg is the smallest city in Chatham County.
There are 16 cities in Chatham County, Georgia.