ZIP Code 31328 — Tybee Island, GA
31328 is a standard (street delivery) ZIP code serving Tybee Island, Georgia, in Chatham County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 31328 at a glance
| ZIP code | 31328 |
|---|---|
| Primary city | Tybee Island |
| State | Georgia (GA) |
| County | Chatham FIPS 13051 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 3,353 |
| Coordinates | 32.010460, -80.890090 |
How ZIP+4 works in 31328
The four digits after the hyphen encode a delivery segment inside 31328. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 31328 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 31328.
| ZIP | City | Distance |
|---|---|---|
| 31410 | Savannah, GA | 6 mi |
| 29915 | Daufuskie Island, SC | 7.3 mi |
| 31411 | Savannah, GA | 9.8 mi |
| 31404 | Savannah, GA | 10 mi |
| 31406 | Savannah, GA | 11.6 mi |
| 31421 | Savannah, GA | 12.3 mi |
| 31401 | Savannah, GA | 12.5 mi |
| 29928 | Hilton Head Island, SC | 12.8 mi |
| 29910 | Bluffton, SC | 14.5 mi |
| 31415 | Savannah, GA | 14.6 mi |
| 31409 | Savannah, GA | 15.5 mi |
| 31405 | Savannah, GA | 16.7 mi |
Questions about 31328
What is the ZIP+4 code for 31328?
31328 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 31328, you need to look up a specific street address to get them.
What city is 31328?
31328 is assigned to Tybee Island, Georgia, in Chatham County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.