ZIP Code 25637 — Mount Gay, WV
25637 is a standard (street delivery) ZIP code serving Mount Gay, West Virginia, in Logan 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 25637 at a glance
| ZIP code | 25637 |
|---|---|
| Primary city | Mount Gay |
| State | West Virginia (WV) |
| County | Logan FIPS 54045 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,004 |
| Coordinates | 37.850860, -82.028050 |
How ZIP+4 works in 25637
The four digits after the hyphen encode a delivery segment inside 25637. 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 25637 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 25637.
| ZIP | City | Distance |
|---|---|---|
| 25601 | Logan, WV | 1.6 mi |
| 25653 | Wilkinson, WV | 2.4 mi |
| 25649 | Verdunville, WV | 3.4 mi |
| 25625 | Holden, WV | 4 mi |
| 25639 | Peach Creek, WV | 4.5 mi |
| 25652 | Whitman, WV | 4.5 mi |
| 25624 | Henlawson, WV | 4.8 mi |
| 25647 | Switzer, WV | 5 mi |
| 25076 | Ethel, WV | 5.1 mi |
| 25612 | Chauncey, WV | 6.5 mi |
| 25547 | Pecks Mill, WV | 6.6 mi |
| 25646 | Stollings, WV | 7.4 mi |
Questions about 25637
What is the ZIP+4 code for 25637?
25637 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 25637, you need to look up a specific street address to get them.
What city is 25637?
25637 is assigned to Mount Gay, West Virginia, in Logan 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.