Chatham County, Georgia
County seat: Savannah · Population 311,855 (2025) · 433 sq mi
Chatham County is the 5th most populous of Georgia's 159 counties, with 311,855 people (2025 estimate). Its county seat is Savannah. It is part of the Coastal region, one of the 12 Georgia Regional Commissions. The map shows its 8 cities and towns and the 4 neighboring counties.
Chatham County facts
- County seat
- Savannah
- Population (2025 estimate)
- 311,855 +5.6% since 2020
- Land area
- 433 sq mi 46th largest of 159
- Water area
- 197 sq mi
- Population density
- 721 per sq mi
- Established
- 1777
- Named after
- William Pitt, 1st Earl of Chatham Prime Minister of Great Britain from 1766 to 1768 (1708–1778)
- Largest city
- Savannah 149,440
- Median household income
- $71,097
- Cities and towns
- 8 plus 9 CDPs
- ZIP codes
- 15
- Time zone
- Eastern
- FIPS code
- 13051
Cities and towns in Chatham County
Chatham County has 8 incorporated cities, towns and villages. Populations count the people living inside Chatham County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Savannah (county seat) | City | 149,440 | |
| Pooler | City | 32,744 | |
| Port Wentworth | City | 17,604 | |
| Garden City | City | 10,513 | |
| Tybee Island | City | 3,156 | |
| Bloomingdale | City | 3,077 | |
| Thunderbolt | Town | 2,534 | |
| Vernonburg | Town | 141 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Wilmington Island | 13,905 | |
| Georgetown | 11,158 | |
| Skidaway Island | 9,315 | |
| Whitemarsh Island | 6,886 | |
| Montgomery | 4,976 | |
| Isle of Hope | 2,053 | |
| Henderson | 1,952 | |
| Dutch Island | 1,225 | |
| Talahi Island | 961 |
ZIP codes in Chatham County
15 ZIP codes reach into Chatham County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 31302 also Effingham County
- 31322
- 31328
- 31401
- 31404
- 31405
- 31406
- 31407
- 31408
- 31409
- 31410
- 31411
- 31415
- 31419
- 31421
Population of Chatham County, 2020–2025
Chatham County grew by 16,594 people (+5.6%) between April 2020 and July 2025: 2,933 more births than deaths and a net gain of 13,180 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 295,113 |
| 2021 | 295,961 |
| 2022 | 301,720 |
| 2023 | 305,244 |
| 2024 | 309,605 |
| 2025 | 311,855 |
Neighboring counties
- Bryan County west · 52,062 people
- Jasper County, South Carolina north · 38,533 people
- Effingham County northwest · 74,397 people
- Liberty County southwest · 70,313 people
Printable Chatham County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (143 KB)
- PNG (2400 px) (131 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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