ZIP Code 40339 — Keene, KY
40339 is a standard (street delivery) ZIP code serving Keene, Kentucky, in Jessamine 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 40339 at a glance
| ZIP code | 40339 |
|---|---|
| Primary city | Keene |
| State | Kentucky (KY) |
| County | Jessamine FIPS 21113 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 346 |
| Coordinates | 37.943130, -84.641070 |
How ZIP+4 works in 40339
The four digits after the hyphen encode a delivery segment inside 40339. 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 40339 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 40339.
| ZIP | City | Distance |
|---|---|---|
| 40514 | Lexington, KY | 5 mi |
| 40513 | Lexington, KY | 5.4 mi |
| 40356 | Nicholasville, KY | 6.3 mi |
| 40390 | Wilmore, KY | 6.4 mi |
| 40383 | Versailles, KY | 7.1 mi |
| 40503 | Lexington, KY | 7.2 mi |
| 40504 | Lexington, KY | 8.7 mi |
| 40517 | Lexington, KY | 8.8 mi |
| 40510 | Lexington, KY | 9.2 mi |
| 40536 | Lexington, KY | 9.4 mi |
| 40526 | Lexington, KY | 9.7 mi |
| 40502 | Lexington, KY | 9.9 mi |
Questions about 40339
What is the ZIP+4 code for 40339?
40339 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 40339, you need to look up a specific street address to get them.
What city is 40339?
40339 is assigned to Keene, Kentucky, in Jessamine 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.