ZIP Code 15442 — Grindstone, PA
15442 is a standard (street delivery) ZIP code serving Grindstone, Pennsylvania, in Fayette 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 15442 at a glance
| ZIP code | 15442 |
|---|---|
| Primary city | Grindstone |
| State | Pennsylvania (PA) |
| County | Fayette FIPS 42051 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,596 |
| Coordinates | 40.015420, -79.840190 |
How ZIP+4 works in 15442
The four digits after the hyphen encode a delivery segment inside 15442. 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 15442 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 15442.
| ZIP | City | Distance |
|---|---|---|
| 15413 | Allison, PA | 2.7 mi |
| 15422 | Chestnut Ridge, PA | 3 mi |
| 15444 | Hiller, PA | 3.6 mi |
| 15417 | Brownsville, PA | 3.9 mi |
| 15419 | California, PA | 4.1 mi |
| 15420 | Cardale, PA | 4.1 mi |
| 15438 | Fayette City, PA | 4.1 mi |
| 15480 | Smock, PA | 4.2 mi |
| 15449 | Keisterville, PA | 4.3 mi |
| 15475 | Republic, PA | 4.5 mi |
| 15477 | Roscoe, PA | 4.5 mi |
| 15468 | New Salem, PA | 4.6 mi |
Questions about 15442
What is the ZIP+4 code for 15442?
15442 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 15442, you need to look up a specific street address to get them.
What city is 15442?
15442 is assigned to Grindstone, Pennsylvania, in Fayette 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.