ZIP Code 18624 — Lake Harmony, PA
18624 is a standard (street delivery) ZIP code serving Lake Harmony, Pennsylvania, in Carbon 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 18624 at a glance
| ZIP code | 18624 |
|---|---|
| Primary city | Lake Harmony |
| State | Pennsylvania (PA) |
| County | Carbon FIPS 42025 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 487 |
| Coordinates | 41.055290, -75.620880 |
How ZIP+4 works in 18624
The four digits after the hyphen encode a delivery segment inside 18624. 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 18624 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 18624.
| ZIP | City | Distance |
|---|---|---|
| 18210 | Albrightsville, PA | 4.1 mi |
| 18610 | Blakeslee, PA | 4.6 mi |
| 18661 | White Haven, PA | 7.3 mi |
| 18347 | Pocono Lake, PA | 7.9 mi |
| 18229 | Jim Thorpe, PA | 9.1 mi |
| 18334 | Long Pond, PA | 9.3 mi |
| 18350 | Pocono Pines, PA | 9.5 mi |
| 18330 | Effort, PA | 10.7 mi |
| 18602 | Bear Creek, PA | 11.5 mi |
| 18346 | Pocono Summit, PA | 11.9 mi |
| 18333 | Kresgeville, PA | 12.8 mi |
| 18058 | Kunkletown, PA | 13.1 mi |
Questions about 18624
What is the ZIP+4 code for 18624?
18624 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 18624, you need to look up a specific street address to get them.
What city is 18624?
18624 is assigned to Lake Harmony, Pennsylvania, in Carbon 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.