ZIP Code 15861 — Sinnamahoning, PA
15861 is a standard (street delivery) ZIP code serving Sinnamahoning, Pennsylvania, in Cameron 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 15861 at a glance
| ZIP code | 15861 |
|---|---|
| Primary city | Sinnamahoning |
| State | Pennsylvania (PA) |
| County | Cameron FIPS 42023 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 84 |
| Coordinates | 41.322100, -78.072460 |
How ZIP+4 works in 15861
The four digits after the hyphen encode a delivery segment inside 15861. 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 15861 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 15861.
| ZIP | City | Distance |
|---|---|---|
| 17778 | Westport, PA | 6.1 mi |
| 15832 | Driftwood, PA | 6.5 mi |
| 16871 | Pottersdale, PA | 9.4 mi |
| 16845 | Karthaus, PA | 11.7 mi |
| 17764 | Renovo, PA | 12.8 mi |
| 15821 | Benezett, PA | 15.3 mi |
| 16836 | Frenchville, PA | 15.7 mi |
| 15834 | Emporium, PA | 16.9 mi |
| 16720 | Austin, PA | 17.9 mi |
| 15868 | Weedville, PA | 18 mi |
| 16864 | Orviston, PA | 18.3 mi |
| 16859 | Moshannon, PA | 18.9 mi |
Questions about 15861
What is the ZIP+4 code for 15861?
15861 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 15861, you need to look up a specific street address to get them.
What city is 15861?
15861 is assigned to Sinnamahoning, Pennsylvania, in Cameron 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.