ZIP Code 18446 — Nicholson, PA
18446 is a standard (street delivery) ZIP code serving Nicholson, Pennsylvania, in Susquehanna 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 18446 at a glance
| ZIP code | 18446 |
|---|---|
| Primary city | Nicholson |
| State | Pennsylvania (PA) |
| County | Susquehanna FIPS 42115 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 3,209 |
| Coordinates | 41.645130, -75.760440 |
How ZIP+4 works in 18446
The four digits after the hyphen encode a delivery segment inside 18446. 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 18446 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 18446.
| ZIP | City | Distance |
|---|---|---|
| 18420 | Fleetville, PA | 4 mi |
| 18824 | Hop Bottom, PA | 4.3 mi |
| 18419 | Factoryville, PA | 5 mi |
| 18440 | La Plume, PA | 5.9 mi |
| 18441 | Lenoxville, PA | 7 mi |
| 18826 | Kingsley, PA | 7.3 mi |
| 18414 | Dalton, PA | 7.4 mi |
| 18844 | Springville, PA | 8.5 mi |
| 18471 | Waverly, PA | 8.6 mi |
| 18823 | Harford, PA | 9.6 mi |
| 18816 | Dimock, PA | 10.1 mi |
| 18625 | Lake Winola, PA | 10.2 mi |
Questions about 18446
What is the ZIP+4 code for 18446?
18446 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 18446, you need to look up a specific street address to get them.
What city is 18446?
18446 is assigned to Nicholson, Pennsylvania, in Susquehanna 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.