ZIP Code 15129 — South Park, PA
15129 is a standard (street delivery) ZIP code serving South Park, Pennsylvania, in Allegheny 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 15129 at a glance
| ZIP code | 15129 |
|---|---|
| Primary city | South Park |
| State | Pennsylvania (PA) |
| County | Allegheny FIPS 42003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 10,789 |
| Coordinates | 40.293480, -79.995150 |
How ZIP+4 works in 15129
The four digits after the hyphen encode a delivery segment inside 15129. 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 15129 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 15129.
| ZIP | City | Distance |
|---|---|---|
| 15102 | Bethel Park, PA | 2.9 mi |
| 15332 | Finleyville, PA | 3.5 mi |
| 15367 | Venetia, PA | 3.8 mi |
| 15236 | Pittsburgh, PA | 3.9 mi |
| 15025 | Clairton, PA | 3.9 mi |
| 15038 | Elrama, PA | 4.8 mi |
| 15020 | Bunola, PA | 5.1 mi |
| 15234 | Pittsburgh, PA | 5.3 mi |
| 15241 | Pittsburgh, PA | 5.4 mi |
| 15088 | West Elizabeth, PA | 5.4 mi |
| 15227 | Pittsburgh, PA | 5.8 mi |
| 15228 | Pittsburgh, PA | 5.9 mi |
Questions about 15129
What is the ZIP+4 code for 15129?
15129 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 15129, you need to look up a specific street address to get them.
What city is 15129?
15129 is assigned to South Park, Pennsylvania, in Allegheny 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.