ZIP Code 98390 — Sumner, WA
98390 is a standard (street delivery) ZIP code serving Sumner, 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 98390 at a glance
| ZIP code | 98390 |
|---|---|
| Primary city | Sumner |
| State | Washington (WA) |
| County | Pierce FIPS 53053 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 11,546 |
| Coordinates | 47.211950, -122.228940 |
How ZIP+4 works in 98390
The four digits after the hyphen encode a delivery segment inside 98390. 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 98390 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 98390.
| ZIP | City | Distance |
|---|---|---|
| 98372 | Puyallup, WA | 1.8 mi |
| 98047 | Pacific, WA | 3.5 mi |
| 98391 | Bonney Lake, WA | 3.6 mi |
| 98371 | Puyallup, WA | 4.4 mi |
| 98354 | Milton, WA | 4.9 mi |
| 98374 | Puyallup, WA | 5.9 mi |
| 98424 | Fife, WA | 6 mi |
| 98373 | Puyallup, WA | 6.3 mi |
| 98002 | Auburn, WA | 6.7 mi |
| 98443 | Tacoma, WA | 6.9 mi |
| 98001 | Auburn, WA | 6.9 mi |
| 98092 | Auburn, WA | 7 mi |
Questions about 98390
What is the ZIP+4 code for 98390?
98390 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 98390, you need to look up a specific street address to get them.
What city is 98390?
98390 is assigned to Sumner, 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.