ZIP Code 15451 — Lake Lynn, PA
15451 is a standard (street delivery) ZIP code serving Lake Lynn, 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 15451 at a glance
| ZIP code | 15451 |
|---|---|
| Primary city | Lake Lynn |
| State | Pennsylvania (PA) |
| County | Fayette FIPS 42051 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 675 |
| Coordinates | 39.740180, -79.840050 |
How ZIP+4 works in 15451
The four digits after the hyphen encode a delivery segment inside 15451. 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 15451 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 15451.
| ZIP | City | Distance |
|---|---|---|
| 15474 | Point Marion, PA | 3.4 mi |
| 15478 | Smithfield, PA | 3.8 mi |
| 15467 | New Geneva, PA | 4.8 mi |
| 15460 | Martin, PA | 5.8 mi |
| 15327 | Dilliner, PA | 6.6 mi |
| 15461 | Masontown, PA | 7.5 mi |
| 15315 | Bobtown, PA | 7.7 mi |
| 15436 | Fairchance, PA | 8.1 mi |
| 26505 | Morgantown, WV | 8.2 mi |
| 15338 | Greensboro, PA | 8.3 mi |
| 15334 | Garards Fort, PA | 8.4 mi |
| 15454 | Leckrone, PA | 8.7 mi |
Questions about 15451
What is the ZIP+4 code for 15451?
15451 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 15451, you need to look up a specific street address to get them.
What city is 15451?
15451 is assigned to Lake Lynn, 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.