ZIP Code 15618 — Avonmore, PA
15618 is a standard (street delivery) ZIP code serving Avonmore, Pennsylvania, in Armstrong 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 15618 at a glance
| ZIP code | 15618 |
|---|---|
| Primary city | Avonmore |
| State | Pennsylvania (PA) |
| County | Armstrong FIPS 42005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,386 |
| Coordinates | 40.562290, -79.446280 |
How ZIP+4 works in 15618
The four digits after the hyphen encode a delivery segment inside 15618. 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 15618 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 15618.
| ZIP | City | Distance |
|---|---|---|
| 15686 | Spring Church, PA | 3.9 mi |
| 15680 | Salina, PA | 3.9 mi |
| 15681 | Saltsburg, PA | 4.2 mi |
| 15783 | West Lebanon, PA | 6 mi |
| 15673 | North Apollo, PA | 6.2 mi |
| 15613 | Apollo, PA | 6.3 mi |
| 15725 | Clarksburg, PA | 6.4 mi |
| 15629 | East Vandergrift, PA | 6.6 mi |
| 15727 | Clune, PA | 6.9 mi |
| 15684 | Slickville, PA | 7.5 mi |
| 15690 | Vandergrift, PA | 7.6 mi |
| 15756 | Mcintyre, PA | 7.6 mi |
Questions about 15618
What is the ZIP+4 code for 15618?
15618 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 15618, you need to look up a specific street address to get them.
What city is 15618?
15618 is assigned to Avonmore, Pennsylvania, in Armstrong 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.