Residential delivery area · Georgia
ZIP Code 31328: Tybee Island, GA
ZIP code 31328 uses the postal name Tybee Island, Georgia and lies entirely in Chatham County (Census 2020 ZIP-county file). About 3,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $109,631 (Census Bureau, ACS 2020-2024). By Census place, 31% of its land lies in Tybee Island; 69% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Tybee Island · its only residential ZIP
- County
- Chatham County
- Census places
- Tybee Island
- Metro area
- Savannah, GA
- House district
- GA-1 119th Congress
- State
- Georgia
- Time zone
- Eastern
- Land area
- 9.2 sq mi · 365 people per sq mi
Where is ZIP code 31328?
31328 centers on 32.004°, -80.891° and covers 9.2 square miles of land plus 1.2 of water.
The map draws ZIP code areas only. For the streets inside 31328, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 31328 compare with the rest of Chatham County?
| Measure | 31328 | In Chatham County | In GA |
|---|---|---|---|
| People (ACS 2020-2024) | 3,353 | 13th of 15 | 458th of 751 |
| Median household income | $110k | 2nd of 13 | 55th of 476 |
| Median home value | $620k | 2nd of 12 | 14th of 474 |
Its median household income is higher than in 86% of U.S. residential ZIP codes, and it is denser than 69% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 31328?
The 2020 Census counted 3,430 people in 31328; the ACS, which samples households over 2020-2024, estimates 3,353. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 3,353
- 2020 Census count
- 3,430
- Households
- 1,575
- Median age
- 61.1
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 31328?
Of the 3,353 people the ACS estimates in 31328, 9.1% are under 18 and 41.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (91.8%).
- Under 189.1%
- 18 to 6449.9%
- 65 and older41.0%
- White, not Hispanic91.8%
- Other or two or more4.8%
- Black, not Hispanic3.0%
- Hispanic or Latino0.3%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 31328 earn?
Median household income is $109,631 (ACS 2020-2024), the 2nd highest of the 13 ranked ZIP codes in Chatham County.
- Median household income
- $109,631±$21,660
- Income per person
- $55,031
- Below the poverty line
- 7.3%
- Unemployed (of the labor force)
- 2.5%
- Adults 25+ with a bachelor's degree
- 46.9%
- Adjusted gross income per tax return, 2022
- $135,9551,620 returns; wages 38% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 31328?
FHFA's house price index for 31328, built from repeat sales and appraisals of the same homes, rose 84% from 2015 to 2025 and rose 52% from 2020 to 2025, and moved +1.9% in 2025.
- Median home value (owners' estimate)
- $619,800
- Median gross rent
- $1,665
- Homes owned by their occupants
- 88.8%
- Housing units
- 3,378
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 31328?
167 business establishments had a location in this ZIP code in 2023, 28 more than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services51
- Real estate and rental and leasing25
- Retail trade19
- Professional, scientific, and technical services14
- Construction11
- Health care and social assistance10
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 31328?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 31410 | Savannah | 22,214 | $98k | 5.8 mi (near) |
| 29915 | Daufuskie Island, SC | 619 | $156k | 8.1 mi (near) |
| 31411 | Savannah | 9,390 | $137k | 9.6 mi (near) |
| 31404 | Savannah | 30,062 | $53k | 10.0 mi (near) |
| 31406 | Savannah | 34,904 | $67k | 11.5 mi (near) |
| 31421 | Savannah | 16 | – | 12.4 mi (near) |
| 31401 | Savannah | 20,445 | $53k | 12.6 mi (near) |
| 29928 | Hilton Head Island, SC | 15,785 | $98k | 13.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.