ZIP Code 30557 — Martin, GA
30557 is a standard (street delivery) ZIP code serving Martin, Georgia, in Franklin 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 30557 at a glance
| ZIP code | 30557 |
|---|---|
| Primary city | Martin |
| State | Georgia (GA) |
| County | Franklin FIPS 13119 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 4,756 |
| Coordinates | 34.481430, -83.184840 |
How ZIP+4 works in 30557
The four digits after the hyphen encode a delivery segment inside 30557. 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 30557 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 30557.
| ZIP | City | Distance |
|---|---|---|
| 30538 | Eastanollee, GA | 5 mi |
| 30553 | Lavonia, GA | 6.1 mi |
| 30577 | Toccoa, GA | 9.5 mi |
| 30521 | Carnesville, GA | 10.3 mi |
| 30516 | Bowersville, GA | 11.1 mi |
| 30520 | Canon, GA | 11.3 mi |
| 29643 | Fair Play, SC | 12.1 mi |
| 29693 | Westminster, SC | 12.2 mi |
| 30598 | Toccoa Falls, GA | 12.5 mi |
| 30639 | Franklin Springs, GA | 13.8 mi |
| 30662 | Royston, GA | 15.2 mi |
| 30511 | Baldwin, GA | 16.6 mi |
Questions about 30557
What is the ZIP+4 code for 30557?
30557 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 30557, you need to look up a specific street address to get them.
What city is 30557?
30557 is assigned to Martin, Georgia, in Franklin 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.