ZIP Code 98651 — Underwood, WA
98651 is a standard (street delivery) ZIP code serving Underwood, Washington, in Skamania 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 98651 at a glance
| ZIP code | 98651 |
|---|---|
| Primary city | Underwood |
| State | Washington (WA) |
| County | Skamania FIPS 53059 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 910 |
| Coordinates | 45.734190, -121.587180 |
How ZIP+4 works in 98651
The four digits after the hyphen encode a delivery segment inside 98651. 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 98651 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 98651.
| ZIP | City | Distance |
|---|---|---|
| 98605 | Bingen, WA | 4 mi |
| 98623 | Husum, WA | 6.4 mi |
| 98672 | White Salmon, WA | 7.7 mi |
| 97031 | Hood River, OR | 8.5 mi |
| 97040 | Mosier, OR | 12.3 mi |
| 97014 | Cascade Locks, OR | 16.1 mi |
| 98650 | Trout Lake, WA | 16.6 mi |
| 98648 | Stevenson, WA | 17.5 mi |
| 98602 | Appleton, WA | 17.5 mi |
| 98635 | Lyle, WA | 18.2 mi |
| 98639 | North Bonneville, WA | 19.1 mi |
| 98610 | Carson, WA | 20.8 mi |
Questions about 98651
What is the ZIP+4 code for 98651?
98651 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 98651, you need to look up a specific street address to get them.
What city is 98651?
98651 is assigned to Underwood, Washington, in Skamania 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.