ZIP Code 40170 — Stephensport, KY
40170 is a standard (street delivery) ZIP code serving Stephensport, Kentucky, in Breckinridge 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 40170 at a glance
| ZIP code | 40170 |
|---|---|
| Primary city | Stephensport |
| State | Kentucky (KY) |
| County | Breckinridge FIPS 21027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 396 |
| Coordinates | 37.964790, -86.496070 |
How ZIP+4 works in 40170
The four digits after the hyphen encode a delivery segment inside 40170. 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 40170 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 40170.
| ZIP | City | Distance |
|---|---|---|
| 40171 | Union Star, KY | 3.3 mi |
| 47574 | Rome, IN | 3.7 mi |
| 47525 | Derby, IN | 5.4 mi |
| 47520 | Cannelton, IN | 5.5 mi |
| 40161 | Rhodelia, KY | 5.9 mi |
| 40157 | Payneville, KY | 7.6 mi |
| 40176 | Webster, KY | 8.6 mi |
| 47551 | Leopold, IN | 11.4 mi |
| 47586 | Tell City, IN | 11.8 mi |
| 40104 | Battletown, KY | 12.1 mi |
| 40143 | Hardinsburg, KY | 12.4 mi |
| 40146 | Irvington, KY | 12.6 mi |
Questions about 40170
What is the ZIP+4 code for 40170?
40170 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 40170, you need to look up a specific street address to get them.
What city is 40170?
40170 is assigned to Stephensport, Kentucky, in Breckinridge 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.