ZIP Code 15078 — Slovan, PA
15078 is a standard (street delivery) ZIP code serving Slovan, Pennsylvania, in Washington 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 15078 at a glance
| ZIP code | 15078 |
|---|---|
| Primary city | Slovan |
| State | Pennsylvania (PA) |
| County | Washington FIPS 42125 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 714 |
| Coordinates | 40.359490, -80.385010 |
How ZIP+4 works in 15078
The four digits after the hyphen encode a delivery segment inside 15078. 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 15078 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 15078.
| ZIP | City | Distance |
|---|---|---|
| 15054 | Langeloth, PA | 0.9 mi |
| 15004 | Atlasburg, PA | 1.2 mi |
| 15053 | Joffre, PA | 2 mi |
| 15021 | Burgettstown, PA | 3.6 mi |
| 15019 | Bulger, PA | 4.4 mi |
| 15060 | Midway, PA | 5.1 mi |
| 15340 | Hickory, PA | 6 mi |
| 15361 | Southview, PA | 6.7 mi |
| 15057 | Mcdonald, PA | 7.3 mi |
| 15312 | Avella, PA | 7.8 mi |
| 15378 | Westland, PA | 8.1 mi |
| 15379 | West Middletown, PA | 8.3 mi |
Questions about 15078
What is the ZIP+4 code for 15078?
15078 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 15078, you need to look up a specific street address to get them.
What city is 15078?
15078 is assigned to Slovan, Pennsylvania, in Washington 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.