ZIP codes

ZIP codes in Chatham County, Georgia

Chatham County has 15 ZIP codes. 14 lie entirely inside it and 1 are shared with neighboring counties, so part of their land and their people are elsewhere. About 300,995 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 15; With 1% or more of their land inside
Entirely inside: 14; 99% or more of their land
Shared with other counties: 1; Most with Effingham County (1)
Most populated ZIP: 31419; 57,077 people · Savannah
Least populated ZIP: 31421; 16 people · Savannah
Largest ZIP by land: 31419; 73 sq mi · Savannah

Map of the ZIP codes in Chatham County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Chatham County

15 ZIP codes in Chatham County, GA, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
31302	Bloomingdale	8,899	59%	≈ 4,585
31322	Pooler	30,145	100%	30,145
31328	Tybee Island	3,353	100%	3,353
31401	Savannah	20,445	100%	20,445
31404	Savannah	30,062	100%	30,062
31405	Savannah	40,764	100%	40,764
31406	Savannah	34,904	100%	34,904
31407	Port Wentworth	24,893	100%	24,893
31408	Garden City	11,621	100%	11,621
31409	Savannah	444	100%	444
31410	Wilmington Island	22,214	100%	22,214
31411	Skidaway Island	9,390	100%	9,390
31415	Savannah	11,082	100%	11,082
31419	Savannah	57,077	100%	57,077
31421	Savannah	16	100%	16

ZIP codes shared with other counties

These 1 ZIP codes have part of their land in another county. The first figure is the share of their land in Chatham County; then, where the rest lies.

31302 (Bloomingdale): 59% here; 41% in Effingham County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Savannah (8), Bloomingdale (1), Garden City (1), Pooler (1), Port Wentworth (1), and Skidaway Island (1); 8 places in all.

They start with 2 different three-digit prefixes, one per USPS sorting center: 313 and 314.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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