ZIP Code 15656 — Leechburg, PA
15656 is a standard (street delivery) ZIP code serving Leechburg, Pennsylvania, in Westmoreland 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 15656 at a glance
| ZIP code | 15656 |
|---|---|
| Primary city | Leechburg |
| State | Pennsylvania (PA) |
| County | Westmoreland FIPS 42129 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 9,506 |
| Coordinates | 40.641140, -79.619810 |
How ZIP+4 works in 15656
The four digits after the hyphen encode a delivery segment inside 15656. 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 15656 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 15656.
| ZIP | City | Distance |
|---|---|---|
| 15641 | Hyde Park, PA | 1.7 mi |
| 15682 | Schenley, PA | 3 mi |
| 15690 | Vandergrift, PA | 4.1 mi |
| 15629 | East Vandergrift, PA | 4.2 mi |
| 15673 | North Apollo, PA | 4.7 mi |
| 16229 | Freeport, PA | 5.4 mi |
| 15065 | Natrona Heights, PA | 5.6 mi |
| 15613 | Apollo, PA | 6.7 mi |
| 15014 | Brackenridge, PA | 6.8 mi |
| 15068 | New Kensington, PA | 7.3 mi |
| 16212 | Cadogan, PA | 8 mi |
| 16055 | Sarver, PA | 8.4 mi |
Questions about 15656
What is the ZIP+4 code for 15656?
15656 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 15656, you need to look up a specific street address to get them.
What city is 15656?
15656 is assigned to Leechburg, Pennsylvania, in Westmoreland 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.