ZIP Code 40840 — Helton, KY
40840 is a standard (street delivery) ZIP code serving Helton, Kentucky, in Leslie 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 40840 at a glance
| ZIP code | 40840 |
|---|---|
| Primary city | Helton |
| State | Kentucky (KY) |
| County | Leslie FIPS 21131 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 355 |
| Coordinates | 36.945700, -83.418540 |
How ZIP+4 works in 40840
The four digits after the hyphen encode a delivery segment inside 40840. 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 40840 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 40840.
| ZIP | City | Distance |
|---|---|---|
| 40874 | Warbranch, KY | 4 mi |
| 40858 | Mozelle, KY | 4.9 mi |
| 40816 | Chappell, KY | 5.2 mi |
| 40979 | Roark, KY | 5.9 mi |
| 40810 | Bledsoe, KY | 6.4 mi |
| 40803 | Asher, KY | 6.9 mi |
| 40913 | Beverly, KY | 6.9 mi |
| 40854 | Loyall, KY | 7.6 mi |
| 40827 | Essie, KY | 7.9 mi |
| 40844 | Hoskinston, KY | 8.3 mi |
| 40806 | Baxter, KY | 8.3 mi |
| 40988 | Stoney Fork, KY | 8.5 mi |
Questions about 40840
What is the ZIP+4 code for 40840?
40840 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 40840, you need to look up a specific street address to get them.
What city is 40840?
40840 is assigned to Helton, Kentucky, in Leslie 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.