ZIP Code 98279 — Olga, WA
98279 is a standard (street delivery) ZIP code serving Olga, Washington, in San Juan 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 98279 at a glance
| ZIP code | 98279 |
|---|---|
| Primary city | Olga |
| State | Washington (WA) |
| County | San Juan FIPS 53055 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 680 |
| Coordinates | 48.644740, -122.806020 |
How ZIP+4 works in 98279
The four digits after the hyphen encode a delivery segment inside 98279. 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 98279 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 98279.
| ZIP | City | Distance |
|---|---|---|
| 98280 | Orcas, WA | 5.2 mi |
| 98245 | Eastsound, WA | 5.2 mi |
| 98222 | Blakely Island, WA | 5.8 mi |
| 98262 | Lummi Island, WA | 7.3 mi |
| 98286 | Shaw Island, WA | 8.5 mi |
| 98243 | Deer Harbor, WA | 9 mi |
| 98297 | Waldron, WA | 10.8 mi |
| 98261 | Lopez Island, WA | 11.6 mi |
| 98221 | Anacortes, WA | 11.9 mi |
| 98250 | Friday Harbor, WA | 14.7 mi |
| 98225 | Bellingham, WA | 15.8 mi |
| 98248 | Ferndale, WA | 17.4 mi |
Questions about 98279
What is the ZIP+4 code for 98279?
98279 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 98279, you need to look up a specific street address to get them.
What city is 98279?
98279 is assigned to Olga, Washington, in San Juan 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.