ZIP Code 15110 — Duquesne, PA
15110 is a standard (street delivery) ZIP code serving Duquesne, 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 15110 at a glance
| ZIP code | 15110 |
|---|---|
| Primary city | Duquesne |
| State | Pennsylvania (PA) |
| County | Allegheny FIPS 42003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 5,149 |
| Coordinates | 40.373210, -79.850240 |
How ZIP+4 works in 15110
The four digits after the hyphen encode a delivery segment inside 15110. 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 15110 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 15110.
| ZIP | City | Distance |
|---|---|---|
| 15137 | North Versailles, PA | 2.2 mi |
| 15104 | Braddock, PA | 2.2 mi |
| 15132 | Mckeesport, PA | 2.3 mi |
| 15112 | East Pittsburgh, PA | 2.3 mi |
| 15035 | East Mckeesport, PA | 2.4 mi |
| 15034 | Dravosburg, PA | 2.6 mi |
| 15122 | West Mifflin, PA | 3.1 mi |
| 15145 | Turtle Creek, PA | 3.2 mi |
| 15148 | Wilmerding, PA | 3.2 mi |
| 15133 | Mckeesport, PA | 3.3 mi |
| 15120 | Homestead, PA | 3.4 mi |
| 15131 | Mckeesport, PA | 3.7 mi |
Questions about 15110
What is the ZIP+4 code for 15110?
15110 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 15110, you need to look up a specific street address to get them.
What city is 15110?
15110 is assigned to Duquesne, 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.