ZIP Code 31523 — Brunswick, GA
31523 is a standard (street delivery) ZIP code serving Brunswick, Georgia, in Glynn 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 31523 at a glance
| ZIP code | 31523 |
|---|---|
| Primary city | Brunswick |
| State | Georgia (GA) |
| County | Glynn FIPS 13127 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 15,402 |
| Coordinates | 31.211130, -81.615190 |
How ZIP+4 works in 31523
The four digits after the hyphen encode a delivery segment inside 31523. 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 31523 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.
Other ZIP codes in Brunswick
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 31523.
| ZIP | City | Distance |
|---|---|---|
| 31520 | Brunswick, GA | 7.9 mi |
| 31524 | Brunswick, GA | 8.6 mi |
| 31525 | Brunswick, GA | 8.8 mi |
| 31565 | Waverly, GA | 10 mi |
| 31566 | Waynesville, GA | 11.6 mi |
| 31527 | Jekyll Island, GA | 14.9 mi |
| 31522 | Saint Simons Island, GA | 15.4 mi |
| 31543 | Hortense, GA | 15.5 mi |
| 31561 | Sea Island, GA | 16.4 mi |
| 31305 | Darien, GA | 18.1 mi |
| 31568 | White Oak, GA | 18.5 mi |
| 31569 | Woodbine, GA | 21.7 mi |
Questions about 31523
What is the ZIP+4 code for 31523?
31523 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 31523, you need to look up a specific street address to get them.
What city is 31523?
31523 is assigned to Brunswick, Georgia, in Glynn 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.