ZIP Code 15323 — Claysville, PA
15323 is a standard (street delivery) ZIP code serving Claysville, 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 15323 at a glance
| ZIP code | 15323 |
|---|---|
| Primary city | Claysville |
| State | Pennsylvania (PA) |
| County | Washington FIPS 42125 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 3,860 |
| Coordinates | 40.108450, -80.409260 |
How ZIP+4 works in 15323
The four digits after the hyphen encode a delivery segment inside 15323. 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 15323 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 15323.
| ZIP | City | Distance |
|---|---|---|
| 15365 | Taylorstown, PA | 3.5 mi |
| 15376 | West Alexander, PA | 4.1 mi |
| 26060 | Valley Grove, WV | 7.2 mi |
| 15377 | West Finley, PA | 9.1 mi |
| 15329 | Prosperity, PA | 9.1 mi |
| 15301 | Washington, PA | 9.1 mi |
| 26032 | Bethany, WV | 9.2 mi |
| 15379 | West Middletown, PA | 9.3 mi |
| 26059 | Triadelphia, WV | 10.1 mi |
| 15312 | Avella, PA | 10.2 mi |
| 26074 | West Liberty, WV | 10.8 mi |
| 15337 | Graysville, PA | 11 mi |
Questions about 15323
What is the ZIP+4 code for 15323?
15323 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 15323, you need to look up a specific street address to get them.
What city is 15323?
15323 is assigned to Claysville, 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.