ZIP Code 31303 — Clyo, GA
31303 is a standard (street delivery) ZIP code serving Clyo, Georgia, in Effingham 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 31303 at a glance
| ZIP code | 31303 |
|---|---|
| Primary city | Clyo |
| State | Georgia (GA) |
| County | Effingham FIPS 13103 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,604 |
| Coordinates | 32.496310, -81.306160 |
How ZIP+4 works in 31303
The four digits after the hyphen encode a delivery segment inside 31303. 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 31303 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 31303.
| ZIP | City | Distance |
|---|---|---|
| 31329 | Springfield, GA | 5.4 mi |
| 29922 | Garnett, SC | 7.1 mi |
| 29943 | Tillman, SC | 9.2 mi |
| 30446 | Newington, GA | 10.4 mi |
| 30449 | Oliver, GA | 13.1 mi |
| 29939 | Scotia, SC | 13.2 mi |
| 29934 | Pineland, SC | 13.2 mi |
| 31312 | Guyton, GA | 13.3 mi |
| 31326 | Rincon, GA | 14.5 mi |
| 29921 | Furman, SC | 15 mi |
| 29918 | Estill, SC | 17.5 mi |
| 29936 | Ridgeland, SC | 19.7 mi |
Questions about 31303
What is the ZIP+4 code for 31303?
31303 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 31303, you need to look up a specific street address to get them.
What city is 31303?
31303 is assigned to Clyo, Georgia, in Effingham 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.