ZIP Code 98056 — Renton, WA
98056 is a standard (street delivery) ZIP code serving Renton, Washington, in King 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 98056 at a glance
| ZIP code | 98056 |
|---|---|
| Primary city | Renton |
| State | Washington (WA) |
| County | King FIPS 53033 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 35,849 |
| Coordinates | 47.512810, -122.189230 |
How ZIP+4 works in 98056
The four digits after the hyphen encode a delivery segment inside 98056. 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 98056 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.
Other ZIP codes in Renton
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 98056.
| ZIP | City | Distance |
|---|---|---|
| 98178 | Seattle, WA | 2.9 mi |
| 98059 | Renton, WA | 3.2 mi |
| 98057 | Renton, WA | 3.2 mi |
| 98006 | Bellevue, WA | 3.6 mi |
| 98040 | Mercer Island, WA | 4.2 mi |
| 98118 | Seattle, WA | 4.2 mi |
| 98055 | Renton, WA | 4.5 mi |
| 98168 | Seattle, WA | 5.5 mi |
| 98058 | Renton, WA | 5.8 mi |
| 98188 | Seattle, WA | 6 mi |
| 98108 | Seattle, WA | 6.1 mi |
| 98158 | Seattle, WA | 7 mi |
Questions about 98056
What is the ZIP+4 code for 98056?
98056 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 98056, you need to look up a specific street address to get them.
What city is 98056?
98056 is assigned to Renton, Washington, in King 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.