ZIP Code 26521 — Blacksville, WV
26521 is a standard (street delivery) ZIP code serving Blacksville, West Virginia, in Monongalia 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 26521 at a glance
| ZIP code | 26521 |
|---|---|
| Primary city | Blacksville |
| State | West Virginia (WV) |
| County | Monongalia FIPS 54061 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 113 |
| Coordinates | 39.713740, -80.230650 |
How ZIP+4 works in 26521
The four digits after the hyphen encode a delivery segment inside 26521. 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 26521 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 26521.
| ZIP | City | Distance |
|---|---|---|
| 26544 | Pentress, WV | 3.2 mi |
| 15362 | Spraggs, PA | 3.2 mi |
| 15316 | Brave, PA | 3.9 mi |
| 26570 | Fairview, WV | 4.9 mi |
| 26590 | Wana, WV | 5.3 mi |
| 26541 | Maidsville, WV | 8.6 mi |
| 15349 | Mount Morris, PA | 8.7 mi |
| 15352 | New Freeport, PA | 9.5 mi |
| 15341 | Holbrook, PA | 9.8 mi |
| 26588 | Rivesville, WV | 10.5 mi |
| 26575 | Hundred, WV | 10.8 mi |
| 26574 | Grant Town, WV | 11 mi |
Questions about 26521
What is the ZIP+4 code for 26521?
26521 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 26521, you need to look up a specific street address to get them.
What city is 26521?
26521 is assigned to Blacksville, West Virginia, in Monongalia 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.