ZIP Code 15564 — Wellersburg, PA
15564 is a standard (street delivery) ZIP code serving Wellersburg, Pennsylvania, in Somerset 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 15564 at a glance
| ZIP code | 15564 |
|---|---|
| Primary city | Wellersburg |
| State | Pennsylvania (PA) |
| County | Somerset FIPS 42111 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 86 |
| Coordinates | 39.729670, -78.845420 |
How ZIP+4 works in 15564
The four digits after the hyphen encode a delivery segment inside 15564. 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 15564 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 15564.
| ZIP | City | Distance |
|---|---|---|
| 21545 | Mount Savage, MD | 2.4 mi |
| 21524 | Corriganville, MD | 2.8 mi |
| 21529 | Ellerslie, MD | 3.9 mi |
| 15545 | Hyndman, PA | 5 mi |
| 21502 | Cumberland, MD | 7.7 mi |
| 21532 | Frostburg, MD | 8 mi |
| 15552 | Meyersdale, PA | 8.6 mi |
| 21543 | Midlothian, MD | 8.7 mi |
| 26767 | Wiley Ford, WV | 9.2 mi |
| 15538 | Fairhope, PA | 9.5 mi |
| 21542 | Midland, MD | 11.1 mi |
| 15532 | Boynton, PA | 11.7 mi |
Questions about 15564
What is the ZIP+4 code for 15564?
15564 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 15564, you need to look up a specific street address to get them.
What city is 15564?
15564 is assigned to Wellersburg, Pennsylvania, in Somerset 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.