ZIP Code 40854 — Loyall, KY
40854 is a standard (street delivery) ZIP code serving Loyall, Kentucky, in Harlan 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 40854 at a glance
| ZIP code | 40854 |
|---|---|
| Primary city | Loyall |
| State | Kentucky (KY) |
| County | Harlan FIPS 21095 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 675 |
| Coordinates | 36.846640, -83.356340 |
How ZIP+4 works in 40854
The four digits after the hyphen encode a delivery segment inside 40854. 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 40854 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 40854.
| ZIP | City | Distance |
|---|---|---|
| 40824 | Dayhoit, KY | 1.7 mi |
| 40873 | Wallins Creek, KY | 3.4 mi |
| 40964 | Mary Alice, KY | 4.5 mi |
| 40806 | Baxter, KY | 4.6 mi |
| 40829 | Grays Knob, KY | 4.7 mi |
| 40830 | Gulston, KY | 5 mi |
| 40801 | Ages Brookside, KY | 5.6 mi |
| 40831 | Harlan, KY | 5.8 mi |
| 40819 | Coldiron, KY | 6.4 mi |
| 40818 | Coalgood, KY | 6.5 mi |
| 40810 | Bledsoe, KY | 6.5 mi |
| 40840 | Helton, KY | 7.6 mi |
Questions about 40854
What is the ZIP+4 code for 40854?
40854 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 40854, you need to look up a specific street address to get them.
What city is 40854?
40854 is assigned to Loyall, Kentucky, in Harlan 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.