ZIP Code 98223 — Arlington, WA
98223 is a standard (street delivery) ZIP code serving Arlington, Washington, in Snohomish 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 98223 at a glance
| ZIP code | 98223 |
|---|---|
| Primary city | Arlington |
| State | Washington (WA) |
| County | Snohomish FIPS 53061 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 46,497 |
| Coordinates | 48.209940, -121.950810 |
How ZIP+4 works in 98223
The four digits after the hyphen encode a delivery segment inside 98223. 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 98223 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 98223.
| ZIP | City | Distance |
|---|---|---|
| 98258 | Lake Stevens, WA | 13.6 mi |
| 98274 | Mount Vernon, WA | 13.6 mi |
| 98270 | Marysville, WA | 13.7 mi |
| 98252 | Granite Falls, WA | 15.1 mi |
| 98271 | Marysville, WA | 15.4 mi |
| 98292 | Stanwood, WA | 16.2 mi |
| 98290 | Snohomish, WA | 17.9 mi |
| 98201 | Everett, WA | 18.4 mi |
| 98207 | Everett, WA | 19.8 mi |
| 98238 | Conway, WA | 20.1 mi |
| 98235 | Clearlake, WA | 21.5 mi |
| 98255 | Hamilton, WA | 21.7 mi |
Questions about 98223
What is the ZIP+4 code for 98223?
98223 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 98223, you need to look up a specific street address to get them.
What city is 98223?
98223 is assigned to Arlington, Washington, in Snohomish 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.