ZIP Code 18370 — Swiftwater, PA
18370 is a standard (street delivery) ZIP code serving Swiftwater, Pennsylvania, in Monroe 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 18370 at a glance
| ZIP code | 18370 |
|---|---|
| Primary city | Swiftwater |
| State | Pennsylvania (PA) |
| County | Monroe FIPS 42089 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 671 |
| Coordinates | 41.089260, -75.337710 |
How ZIP+4 works in 18370
The four digits after the hyphen encode a delivery segment inside 18370. 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 18370 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 18370.
| ZIP | City | Distance |
|---|---|---|
| 18355 | Scotrun, PA | 1.5 mi |
| 18349 | Pocono Manor, PA | 1.7 mi |
| 18344 | Mount Pocono, PA | 2 mi |
| 18372 | Tannersville, PA | 2.9 mi |
| 18332 | Henryville, PA | 4.1 mi |
| 18321 | Bartonsville, PA | 5.6 mi |
| 18334 | Long Pond, PA | 5.6 mi |
| 18342 | Mountainhome, PA | 5.9 mi |
| 18346 | Pocono Summit, PA | 6.1 mi |
| 18350 | Pocono Pines, PA | 6.4 mi |
| 18326 | Cresco, PA | 6.4 mi |
| 18466 | Tobyhanna, PA | 7.7 mi |
Questions about 18370
What is the ZIP+4 code for 18370?
18370 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 18370, you need to look up a specific street address to get them.
What city is 18370?
18370 is assigned to Swiftwater, Pennsylvania, in Monroe 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.