ZIP Code 98564 — Mossyrock, WA
98564 is a standard (street delivery) ZIP code serving Mossyrock, Washington, in Lewis 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 98564 at a glance
| ZIP code | 98564 |
|---|---|
| Primary city | Mossyrock |
| State | Washington (WA) |
| County | Lewis FIPS 53041 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 3,382 |
| Coordinates | 46.456660, -122.436270 |
How ZIP+4 works in 98564
The four digits after the hyphen encode a delivery segment inside 98564. 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 98564 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 98564.
| ZIP | City | Distance |
|---|---|---|
| 98585 | Silver Creek, WA | 7.4 mi |
| 98582 | Salkum, WA | 10 mi |
| 98649 | Toutle, WA | 10.8 mi |
| 98356 | Morton, WA | 11.6 mi |
| 98591 | Toledo, WA | 14.8 mi |
| 98542 | Ethel, WA | 14.9 mi |
| 98533 | Cinebar, WA | 14.9 mi |
| 98570 | Onalaska, WA | 15.6 mi |
| 98336 | Glenoma, WA | 17.2 mi |
| 98645 | Silverlake, WA | 18.7 mi |
| 98565 | Napavine, WA | 23.9 mi |
| 98611 | Castle Rock, WA | 24.6 mi |
Questions about 98564
What is the ZIP+4 code for 98564?
98564 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 98564, you need to look up a specific street address to get them.
What city is 98564?
98564 is assigned to Mossyrock, Washington, in Lewis 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.