ZIP Code 15447 — Isabella, PA
15447 is a standard (street delivery) ZIP code serving Isabella, Pennsylvania, in Fayette 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 15447 at a glance
| ZIP code | 15447 |
|---|---|
| Primary city | Isabella |
| State | Pennsylvania (PA) |
| County | Fayette FIPS 42051 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 73 |
| Coordinates | 39.944500, -79.932570 |
How ZIP+4 works in 15447
The four digits after the hyphen encode a delivery segment inside 15447. 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 15447 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 15447.
| ZIP | City | Distance |
|---|---|---|
| 15325 | Crucible, PA | 1.7 mi |
| 15463 | Merrittstown, PA | 2.2 mi |
| 15433 | East Millsboro, PA | 2.4 mi |
| 15357 | Rices Landing, PA | 2.6 mi |
| 15410 | Adah, PA | 2.7 mi |
| 15475 | Republic, PA | 2.9 mi |
| 15443 | Hibbs, PA | 3.1 mi |
| 15420 | Cardale, PA | 3.7 mi |
| 15413 | Allison, PA | 4.3 mi |
| 15429 | Denbo, PA | 4.3 mi |
| 15435 | Fairbank, PA | 4.5 mi |
| 15348 | Millsboro, PA | 4.5 mi |
Questions about 15447
What is the ZIP+4 code for 15447?
15447 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 15447, you need to look up a specific street address to get them.
What city is 15447?
15447 is assigned to Isabella, Pennsylvania, in Fayette 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.