ZIP Code 18431 — Honesdale, PA
18431 is a standard (street delivery) ZIP code serving Honesdale, Pennsylvania, in Wayne 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 18431 at a glance
| ZIP code | 18431 |
|---|---|
| Primary city | Honesdale |
| State | Pennsylvania (PA) |
| County | Wayne FIPS 42127 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 12,775 |
| Coordinates | 41.622140, -75.255310 |
How ZIP+4 works in 18431
The four digits after the hyphen encode a delivery segment inside 18431. 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 18431 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 18431.
| ZIP | City | Distance |
|---|---|---|
| 18456 | Prompton, PA | 4.4 mi |
| 18473 | White Mills, PA | 6.9 mi |
| 18472 | Waymart, PA | 7.8 mi |
| 18469 | Tyler Hill, PA | 8 mi |
| 18443 | Milanville, PA | 8 mi |
| 18405 | Beach Lake, PA | 8.4 mi |
| 18453 | Pleasant Mount, PA | 10.4 mi |
| 18415 | Damascus, PA | 11.4 mi |
| 18421 | Forest City, PA | 11.4 mi |
| 18438 | Lakeville, PA | 12.9 mi |
| 18417 | Equinunk, PA | 13.1 mi |
| 12764 | Narrowsburg, NY | 14 mi |
Questions about 18431
What is the ZIP+4 code for 18431?
18431 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 18431, you need to look up a specific street address to get them.
What city is 18431?
18431 is assigned to Honesdale, Pennsylvania, in Wayne 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.