ZIP Code 15636 — Harrison City, PA
15636 is a standard (street delivery) ZIP code serving Harrison City, 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 15636 at a glance
| ZIP code | 15636 |
|---|---|
| Primary city | Harrison City |
| State | Pennsylvania (PA) |
| County | Westmoreland FIPS 42129 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 3,560 |
| Coordinates | 40.364590, -79.656190 |
How ZIP+4 works in 15636
The four digits after the hyphen encode a delivery segment inside 15636. 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 15636 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 15636.
| ZIP | City | Distance |
|---|---|---|
| 15623 | Claridge, PA | 1.8 mi |
| 15665 | Manor, PA | 1.8 mi |
| 15675 | Penn, PA | 2.3 mi |
| 15692 | Westmoreland City, PA | 2.6 mi |
| 15644 | Jeannette, PA | 2.6 mi |
| 15647 | Larimer, PA | 3.7 mi |
| 15634 | Grapeville, PA | 3.8 mi |
| 15085 | Trafford, PA | 3.9 mi |
| 15611 | Adamsburg, PA | 4 mi |
| 15615 | Ardara, PA | 4.1 mi |
| 15642 | Irwin, PA | 4.6 mi |
| 15691 | Wendel, PA | 4.9 mi |
Questions about 15636
What is the ZIP+4 code for 15636?
15636 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 15636, you need to look up a specific street address to get them.
What city is 15636?
15636 is assigned to Harrison City, 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.