ZIP Code 17771 — Trout Run, PA
17771 is a standard (street delivery) ZIP code serving Trout Run, Pennsylvania, in Lycoming 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 17771 at a glance
| ZIP code | 17771 |
|---|---|
| Primary city | Trout Run |
| State | Pennsylvania (PA) |
| County | Lycoming FIPS 42081 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,929 |
| Coordinates | 41.431370, -77.045240 |
How ZIP+4 works in 17771
The four digits after the hyphen encode a delivery segment inside 17771. 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 17771 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 17771.
| ZIP | City | Distance |
|---|---|---|
| 17728 | Cogan Station, PA | 7.6 mi |
| 17763 | Ralston, PA | 8.7 mi |
| 17701 | Williamsport, PA | 10.2 mi |
| 17765 | Roaring Branch, PA | 10.7 mi |
| 16930 | Liberty, PA | 11.2 mi |
| 17754 | Montoursville, PA | 11.8 mi |
| 17776 | Waterville, PA | 13.9 mi |
| 17744 | Linden, PA | 14.3 mi |
| 16912 | Blossburg, PA | 16.3 mi |
| 18619 | Hillsgrove, PA | 16.9 mi |
| 17768 | Shunk, PA | 17.3 mi |
| 17702 | Williamsport, PA | 17.3 mi |
Questions about 17771
What is the ZIP+4 code for 17771?
17771 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 17771, you need to look up a specific street address to get them.
What city is 17771?
17771 is assigned to Trout Run, Pennsylvania, in Lycoming 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.