ZIP Code 18424 — Gouldsboro, PA
18424 is a standard (street delivery) ZIP code serving Gouldsboro, Pennsylvania, in Lackawanna 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 18424 at a glance
| ZIP code | 18424 |
|---|---|
| Primary city | Gouldsboro |
| State | Pennsylvania (PA) |
| County | Lackawanna FIPS 42069 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 5,213 |
| Coordinates | 41.242670, -75.522340 |
How ZIP+4 works in 18424
The four digits after the hyphen encode a delivery segment inside 18424. 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 18424 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 18424.
| ZIP | City | Distance |
|---|---|---|
| 18347 | Pocono Lake, PA | 6.4 mi |
| 18444 | Moscow, PA | 6.8 mi |
| 18466 | Tobyhanna, PA | 8.1 mi |
| 18346 | Pocono Summit, PA | 8.3 mi |
| 18460 | South Sterling, PA | 9.2 mi |
| 18350 | Pocono Pines, PA | 9.6 mi |
| 18445 | Newfoundland, PA | 9.8 mi |
| 18463 | Sterling, PA | 10.4 mi |
| 18507 | Moosic, PA | 11.3 mi |
| 18640 | Pittston, PA | 11.9 mi |
| 18505 | Scranton, PA | 12.1 mi |
| 18342 | Mountainhome, PA | 12.3 mi |
Questions about 18424
What is the ZIP+4 code for 18424?
18424 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 18424, you need to look up a specific street address to get them.
What city is 18424?
18424 is assigned to Gouldsboro, Pennsylvania, in Lackawanna 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.