ZIP Code 31811 — Hamilton, GA
31811 is a standard (street delivery) ZIP code serving Hamilton, Georgia, in Harris 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 31811 at a glance
| ZIP code | 31811 |
|---|---|
| Primary city | Hamilton |
| State | Georgia (GA) |
| County | Harris FIPS 13145 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 6,052 |
| Coordinates | 32.745220, -84.933270 |
How ZIP+4 works in 31811
The four digits after the hyphen encode a delivery segment inside 31811. 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 31811 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 31811.
| ZIP | City | Distance |
|---|---|---|
| 31804 | Cataula, GA | 6.4 mi |
| 31823 | Pine Mountain Valley, GA | 7.9 mi |
| 31822 | Pine Mountain, GA | 8.5 mi |
| 31808 | Fortson, GA | 8.7 mi |
| 31807 | Ellerslie, GA | 10.5 mi |
| 31833 | West Point, GA | 11.7 mi |
| 31820 | Midland, GA | 13.2 mi |
| 31909 | Columbus, GA | 13.8 mi |
| 31826 | Shiloh, GA | 13.8 mi |
| 31904 | Columbus, GA | 13.9 mi |
| 31831 | Waverly Hall, GA | 14.3 mi |
| 36854 | Valley, AL | 14.6 mi |
Questions about 31811
What is the ZIP+4 code for 31811?
31811 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 31811, you need to look up a specific street address to get them.
What city is 31811?
31811 is assigned to Hamilton, Georgia, in Harris 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.