ZIP Code 98558 — Mckenna, WA
98558 is a standard (street delivery) ZIP code serving Mckenna, Washington, in Pierce 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 98558 at a glance
| ZIP code | 98558 |
|---|---|
| Primary city | Mckenna |
| State | Washington (WA) |
| County | Pierce FIPS 53053 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 61 |
| Coordinates | 46.935790, -122.559980 |
How ZIP+4 works in 98558
The four digits after the hyphen encode a delivery segment inside 98558. 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 98558 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 98558.
| ZIP | City | Distance |
|---|---|---|
| 98580 | Roy, WA | 4.8 mi |
| 98597 | Yelm, WA | 6.6 mi |
| 98576 | Rainier, WA | 7.5 mi |
| 98513 | Olympia, WA | 9 mi |
| 98433 | Tacoma, WA | 11 mi |
| 98387 | Spanaway, WA | 11.5 mi |
| 98327 | Dupont, WA | 12.4 mi |
| 98430 | Camp Murray, WA | 12.5 mi |
| 98503 | Lacey, WA | 12.8 mi |
| 98439 | Lakewood, WA | 13.8 mi |
| 98589 | Tenino, WA | 13.9 mi |
| 98438 | Mcchord Afb, WA | 14.1 mi |
Questions about 98558
What is the ZIP+4 code for 98558?
98558 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 98558, you need to look up a specific street address to get them.
What city is 98558?
98558 is assigned to Mckenna, Washington, in Pierce 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.