ZIP Code 98383 — Silverdale, WA
98383 is a standard (street delivery) ZIP code serving Silverdale, Washington, in Kitsap 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 98383 at a glance
| ZIP code | 98383 |
|---|---|
| Primary city | Silverdale |
| State | Washington (WA) |
| County | Kitsap FIPS 53035 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 21,604 |
| Coordinates | 47.662120, -122.716520 |
How ZIP+4 works in 98383
The four digits after the hyphen encode a delivery segment inside 98383. 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 98383 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 Silverdale
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 98383.
| ZIP | City | Distance |
|---|---|---|
| 98315 | Silverdale, WA | 4.2 mi |
| 98311 | Bremerton, WA | 4.3 mi |
| 98345 | Keyport, WA | 5 mi |
| 98310 | Bremerton, WA | 6.8 mi |
| 98312 | Bremerton, WA | 7 mi |
| 98370 | Poulsbo, WA | 7.5 mi |
| 98314 | Bremerton, WA | 7.8 mi |
| 98337 | Bremerton, WA | 7.8 mi |
| 98110 | Bainbridge Island, WA | 8.1 mi |
| 98392 | Suquamish, WA | 8.7 mi |
| 98366 | Port Orchard, WA | 10.5 mi |
| 98380 | Seabeck, WA | 10.6 mi |
Questions about 98383
What is the ZIP+4 code for 98383?
98383 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 98383, you need to look up a specific street address to get them.
What city is 98383?
98383 is assigned to Silverdale, Washington, in Kitsap 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.