ZIP Code 42721 — Caneyville, KY
42721 is a standard (street delivery) ZIP code serving Caneyville, Kentucky, in Grayson 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 42721 at a glance
| ZIP code | 42721 |
|---|---|
| Primary city | Caneyville |
| State | Kentucky (KY) |
| County | Grayson FIPS 21085 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 4,353 |
| Coordinates | 37.421730, -86.495930 |
How ZIP+4 works in 42721
The four digits after the hyphen encode a delivery segment inside 42721. 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 42721 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 42721.
| ZIP | City | Distance |
|---|---|---|
| 42762 | Millwood, KY | 5.9 mi |
| 42349 | Horse Branch, KY | 9.8 mi |
| 42754 | Leitchfield, KY | 10.7 mi |
| 42361 | Olaton, KY | 12.6 mi |
| 42252 | Jetson, KY | 12.7 mi |
| 40119 | Falls Of Rough, KY | 13.2 mi |
| 42370 | Rosine, KY | 13.6 mi |
| 40152 | Mcdaniels, KY | 13.6 mi |
| 42275 | Roundhill, KY | 13.7 mi |
| 42207 | Bee Spring, KY | 14.4 mi |
| 42333 | Cromwell, KY | 14.6 mi |
| 42285 | Sweeden, KY | 15.4 mi |
Questions about 42721
What is the ZIP+4 code for 42721?
42721 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 42721, you need to look up a specific street address to get them.
What city is 42721?
42721 is assigned to Caneyville, Kentucky, in Grayson 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.