ZIP Code 98257 — La Conner, WA
98257 is a standard (street delivery) ZIP code serving La Conner, Washington, in Skagit 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 98257 at a glance
| ZIP code | 98257 |
|---|---|
| Primary city | La Conner |
| State | Washington (WA) |
| County | Skagit FIPS 53057 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 4,277 |
| Coordinates | 48.415000, -122.508790 |
How ZIP+4 works in 98257
The four digits after the hyphen encode a delivery segment inside 98257. 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 98257 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 98257.
| ZIP | City | Distance |
|---|---|---|
| 98273 | Mount Vernon, WA | 6.5 mi |
| 98278 | Oak Harbor, WA | 8.7 mi |
| 98277 | Oak Harbor, WA | 8.8 mi |
| 98221 | Anacortes, WA | 9.1 mi |
| 98238 | Conway, WA | 9.3 mi |
| 98233 | Burlington, WA | 9.4 mi |
| 98232 | Bow, WA | 11.2 mi |
| 98235 | Clearlake, WA | 13.2 mi |
| 98282 | Camano Island, WA | 15.8 mi |
| 98292 | Stanwood, WA | 16.2 mi |
| 98222 | Blakely Island, WA | 16.8 mi |
| 98239 | Coupeville, WA | 17 mi |
Questions about 98257
What is the ZIP+4 code for 98257?
98257 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 98257, you need to look up a specific street address to get them.
What city is 98257?
98257 is assigned to La Conner, Washington, in Skagit 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.