ZIP Code 15673 — North Apollo, PA
15673 is a standard (street delivery) ZIP code serving North Apollo, 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 15673 at a glance
| ZIP code | 15673 |
|---|---|
| Primary city | North Apollo |
| State | Pennsylvania (PA) |
| County | Armstrong FIPS 42005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,156 |
| Coordinates | 40.593830, -79.556340 |
How ZIP+4 works in 15673
The four digits after the hyphen encode a delivery segment inside 15673. 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 15673 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 15673.
| ZIP | City | Distance |
|---|---|---|
| 15629 | East Vandergrift, PA | 0.4 mi |
| 15613 | Apollo, PA | 2.8 mi |
| 15641 | Hyde Park, PA | 3.1 mi |
| 15690 | Vandergrift, PA | 3.6 mi |
| 15656 | Leechburg, PA | 4.7 mi |
| 15680 | Salina, PA | 5.9 mi |
| 15618 | Avonmore, PA | 6.2 mi |
| 15686 | Spring Church, PA | 6.5 mi |
| 15682 | Schenley, PA | 7.5 mi |
| 15068 | New Kensington, PA | 8.5 mi |
| 15681 | Saltsburg, PA | 8.8 mi |
| 16226 | Ford City, PA | 8.9 mi |
Questions about 15673
What is the ZIP+4 code for 15673?
15673 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 15673, you need to look up a specific street address to get them.
What city is 15673?
15673 is assigned to North Apollo, 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.