ZIP Code 98320 — Brinnon, WA
98320 is a standard (street delivery) ZIP code serving Brinnon, Washington, in Jefferson 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 98320 at a glance
| ZIP code | 98320 |
|---|---|
| Primary city | Brinnon |
| State | Washington (WA) |
| County | Jefferson FIPS 53031 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 1,219 |
| Coordinates | 47.698610, -123.017420 |
How ZIP+4 works in 98320
The four digits after the hyphen encode a delivery segment inside 98320. 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 98320 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 98320.
| ZIP | City | Distance |
|---|---|---|
| 98380 | Seabeck, WA | 10.1 mi |
| 98555 | Lilliwaup, WA | 10.7 mi |
| 98376 | Quilcene, WA | 12.5 mi |
| 98315 | Silverdale, WA | 14.2 mi |
| 98383 | Silverdale, WA | 14.2 mi |
| 98312 | Bremerton, WA | 15.2 mi |
| 98588 | Tahuya, WA | 18.2 mi |
| 98345 | Keyport, WA | 18.3 mi |
| 98528 | Belfair, WA | 18.3 mi |
| 98311 | Bremerton, WA | 18.3 mi |
| 98370 | Poulsbo, WA | 18.6 mi |
| 98314 | Bremerton, WA | 19.9 mi |
Questions about 98320
What is the ZIP+4 code for 98320?
98320 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 98320, you need to look up a specific street address to get them.
What city is 98320?
98320 is assigned to Brinnon, Washington, in Jefferson 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.