ZIP Code 31091 — Unadilla, GA
31091 is a standard (street delivery) ZIP code serving Unadilla, Georgia, in Dooly 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 31091 at a glance
| ZIP code | 31091 |
|---|---|
| Primary city | Unadilla |
| State | Georgia (GA) |
| County | Dooly FIPS 13093 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 4,204 |
| Coordinates | 32.236530, -83.699660 |
How ZIP+4 works in 31091
The four digits after the hyphen encode a delivery segment inside 31091. 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 31091 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 31091.
| ZIP | City | Distance |
|---|---|---|
| 31070 | Pinehurst, GA | 6.1 mi |
| 31025 | Elko, GA | 7.4 mi |
| 31092 | Vienna, GA | 11.2 mi |
| 31036 | Hawkinsville, GA | 12.1 mi |
| 31051 | Lilly, GA | 12.2 mi |
| 31071 | Pineview, GA | 12.6 mi |
| 31007 | Byromville, GA | 14 mi |
| 31069 | Perry, GA | 14.3 mi |
| 31063 | Montezuma, GA | 15.9 mi |
| 31047 | Kathleen, GA | 17.4 mi |
| 31057 | Marshallville, GA | 19.7 mi |
| 31072 | Pitts, GA | 20.2 mi |
Questions about 31091
What is the ZIP+4 code for 31091?
31091 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 31091, you need to look up a specific street address to get them.
What city is 31091?
31091 is assigned to Unadilla, Georgia, in Dooly 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.