ZIP Code 40047 — Mount Washington, KY
40047 is a standard (street delivery) ZIP code serving Mount Washington, Kentucky, in Bullitt 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 40047 at a glance
| ZIP code | 40047 |
|---|---|
| Primary city | Mount Washington |
| State | Kentucky (KY) |
| County | Bullitt FIPS 21029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 23,662 |
| Coordinates | 38.040070, -85.554530 |
How ZIP+4 works in 40047
The four digits after the hyphen encode a delivery segment inside 40047. 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 40047 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 40047.
| ZIP | City | Distance |
|---|---|---|
| 40291 | Louisville, KY | 6.2 mi |
| 40229 | Louisville, KY | 6.5 mi |
| 40228 | Louisville, KY | 8 mi |
| 40165 | Shepherdsville, KY | 8 mi |
| 40013 | Coxs Creek, KY | 8.2 mi |
| 40110 | Clermont, KY | 8.6 mi |
| 40299 | Louisville, KY | 8.7 mi |
| 40219 | Louisville, KY | 10 mi |
| 40071 | Taylorsville, KY | 10 mi |
| 40023 | Fisherville, KY | 11 mi |
| 40109 | Brooks, KY | 11 mi |
| 40020 | Fairfield, KY | 11.6 mi |
Questions about 40047
What is the ZIP+4 code for 40047?
40047 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 40047, you need to look up a specific street address to get them.
What city is 40047?
40047 is assigned to Mount Washington, Kentucky, in Bullitt 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.