ZIP Code 15924 — Cairnbrook, PA
15924 is a standard (street delivery) ZIP code serving Cairnbrook, 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 15924 at a glance
| ZIP code | 15924 |
|---|---|
| Primary city | Cairnbrook |
| State | Pennsylvania (PA) |
| County | Somerset FIPS 42111 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 740 |
| Coordinates | 40.106840, -78.775270 |
How ZIP+4 works in 15924
The four digits after the hyphen encode a delivery segment inside 15924. 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 15924 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 15924.
| ZIP | City | Distance |
|---|---|---|
| 15926 | Central City, PA | 4.7 mi |
| 15559 | Schellsburg, PA | 5.9 mi |
| 15936 | Hooversville, PA | 7.4 mi |
| 15963 | Windber, PA | 7.6 mi |
| 15563 | Stoystown, PA | 8.5 mi |
| 15554 | New Paris, PA | 8.5 mi |
| 15560 | Shanksville, PA | 9.3 mi |
| 15953 | Seanor, PA | 9.4 mi |
| 15539 | Fishertown, PA | 9.7 mi |
| 15521 | Alum Bank, PA | 9.9 mi |
| 15550 | Manns Choice, PA | 10.6 mi |
| 15541 | Friedens, PA | 11.6 mi |
Questions about 15924
What is the ZIP+4 code for 15924?
15924 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 15924, you need to look up a specific street address to get them.
What city is 15924?
15924 is assigned to Cairnbrook, 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.