ZIP Code 31787 — Smithville, GA
31787 is a standard (street delivery) ZIP code serving Smithville, Georgia, in Lee 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 31787 at a glance
| ZIP code | 31787 |
|---|---|
| Primary city | Smithville |
| State | Georgia (GA) |
| County | Lee FIPS 13177 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,122 |
| Coordinates | 31.899940, -84.249470 |
How ZIP+4 works in 31787
The four digits after the hyphen encode a delivery segment inside 31787. 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 31787 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 31787.
| ZIP | City | Distance |
|---|---|---|
| 39826 | Bronwood, GA | 7 mi |
| 31764 | Leslie, GA | 11.2 mi |
| 31780 | Plains, GA | 12.1 mi |
| 31709 | Americus, GA | 12.2 mi |
| 31763 | Leesburg, GA | 12.6 mi |
| 31719 | Americus, GA | 12.9 mi |
| 39885 | Sasser, GA | 13.5 mi |
| 31743 | De Soto, GA | 14.3 mi |
| 39842 | Dawson, GA | 15 mi |
| 39877 | Parrott, GA | 15.1 mi |
| 31735 | Cobb, GA | 17.4 mi |
| 31824 | Preston, GA | 19.3 mi |
Questions about 31787
What is the ZIP+4 code for 31787?
31787 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 31787, you need to look up a specific street address to get them.
What city is 31787?
31787 is assigned to Smithville, Georgia, in Lee 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.