ZIP Code 18518 — Old Forge, PA
18518 is a standard (street delivery) ZIP code serving Old Forge, 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 18518 at a glance
| ZIP code | 18518 |
|---|---|
| Primary city | Old Forge |
| State | Pennsylvania (PA) |
| County | Lackawanna FIPS 42069 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 8,573 |
| Coordinates | 41.374950, -75.739630 |
How ZIP+4 works in 18518
The four digits after the hyphen encode a delivery segment inside 18518. 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 18518 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 18518.
| ZIP | City | Distance |
|---|---|---|
| 18517 | Taylor, PA | 1.9 mi |
| 18642 | Duryea, PA | 2.4 mi |
| 18641 | Pittston, PA | 2.7 mi |
| 18507 | Moosic, PA | 3.4 mi |
| 18504 | Scranton, PA | 3.8 mi |
| 18503 | Scranton, PA | 4.4 mi |
| 18505 | Scranton, PA | 4.7 mi |
| 18643 | Pittston, PA | 5 mi |
| 18640 | Pittston, PA | 5.4 mi |
| 18510 | Scranton, PA | 5.4 mi |
| 18411 | Clarks Summit, PA | 5.6 mi |
| 18509 | Scranton, PA | 6.3 mi |
Questions about 18518
What is the ZIP+4 code for 18518?
18518 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 18518, you need to look up a specific street address to get them.
What city is 18518?
18518 is assigned to Old Forge, 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.