ZIP Code 15003 — Ambridge, PA
15003 is a standard (street delivery) ZIP code serving Ambridge, Pennsylvania, in Beaver 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 15003 at a glance
| ZIP code | 15003 |
|---|---|
| Primary city | Ambridge |
| State | Pennsylvania (PA) |
| County | Beaver FIPS 42007 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 11,387 |
| Coordinates | 40.601530, -80.214150 |
How ZIP+4 works in 15003
The four digits after the hyphen encode a delivery segment inside 15003. 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 15003 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 15003.
| ZIP | City | Distance |
|---|---|---|
| 15081 | South Heights, PA | 2.2 mi |
| 15056 | Leetsdale, PA | 2.5 mi |
| 15046 | Crescent, PA | 3.2 mi |
| 15005 | Baden, PA | 3.6 mi |
| 15143 | Sewickley, PA | 4 mi |
| 15027 | Conway, PA | 4.7 mi |
| 15001 | Aliquippa, PA | 5.6 mi |
| 15042 | Freedom, PA | 6 mi |
| 15061 | Monaca, PA | 6.5 mi |
| 15108 | Coraopolis, PA | 7 mi |
| 15015 | Bradfordwoods, PA | 7.3 mi |
| 15086 | Warrendale, PA | 7.5 mi |
Questions about 15003
What is the ZIP+4 code for 15003?
15003 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 15003, you need to look up a specific street address to get them.
What city is 15003?
15003 is assigned to Ambridge, Pennsylvania, in Beaver 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.