ZIP Code 40997 — Walker, KY
40997 is a standard (street delivery) ZIP code serving Walker, Kentucky, in Knox 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 40997 at a glance
| ZIP code | 40997 |
|---|---|
| Primary city | Walker |
| State | Kentucky (KY) |
| County | Knox FIPS 21121 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 404 |
| Coordinates | 36.883480, -83.677110 |
How ZIP+4 works in 40997
The four digits after the hyphen encode a delivery segment inside 40997. 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 40997 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 40997.
| ZIP | City | Distance |
|---|---|---|
| 40935 | Flat Lick, KY | 2.7 mi |
| 40982 | Scalf, KY | 3.5 mi |
| 40902 | Arjay, KY | 3.8 mi |
| 40939 | Fourmile, KY | 5.3 mi |
| 40958 | Kettle Island, KY | 7.1 mi |
| 40953 | Hinkle, KY | 7.8 mi |
| 40915 | Bimble, KY | 7.9 mi |
| 40988 | Stoney Fork, KY | 8.4 mi |
| 40913 | Beverly, KY | 8.7 mi |
| 40946 | Green Road, KY | 9.6 mi |
| 40923 | Cannon, KY | 9.8 mi |
| 40903 | Artemus, KY | 9.9 mi |
Questions about 40997
What is the ZIP+4 code for 40997?
40997 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 40997, you need to look up a specific street address to get them.
What city is 40997?
40997 is assigned to Walker, Kentucky, in Knox 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.