ZIP Code 15520 — Acosta, PA
15520 is a standard (street delivery) ZIP code serving Acosta, Pennsylvania, in Somerset 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 15520 at a glance
| ZIP code | 15520 |
|---|---|
| Primary city | Acosta |
| State | Pennsylvania (PA) |
| County | Somerset FIPS 42111 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 301 |
| Coordinates | 40.106260, -79.060170 |
How ZIP+4 works in 15520
The four digits after the hyphen encode a delivery segment inside 15520. 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 15520 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 15520.
| ZIP | City | Distance |
|---|---|---|
| 15555 | Quecreek, PA | 1.3 mi |
| 15561 | Sipesville, PA | 1.8 mi |
| 15546 | Jenners, PA | 2.2 mi |
| 15544 | Gray, PA | 2.6 mi |
| 15547 | Jennerstown, PA | 3.9 mi |
| 15531 | Boswell, PA | 5.6 mi |
| 15541 | Friedens, PA | 5.8 mi |
| 15501 | Somerset, PA | 6.1 mi |
| 15563 | Stoystown, PA | 6.6 mi |
| 15935 | Hollsopple, PA | 8.2 mi |
| 15937 | Jerome, PA | 8.6 mi |
| 15655 | Laughlintown, PA | 9 mi |
Questions about 15520
What is the ZIP+4 code for 15520?
15520 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 15520, you need to look up a specific street address to get them.
What city is 15520?
15520 is assigned to Acosta, Pennsylvania, in Somerset 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.