ZIP Code 98270 — Marysville, WA
98270 is a standard (street delivery) ZIP code serving Marysville, 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 98270 at a glance
| ZIP code | 98270 |
|---|---|
| Primary city | Marysville |
| State | Washington (WA) |
| County | Snohomish FIPS 53061 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 55,049 |
| Coordinates | 48.059520, -122.144300 |
How ZIP+4 works in 98270
The four digits after the hyphen encode a delivery segment inside 98270. 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 98270 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 Marysville
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 98270.
| ZIP | City | Distance |
|---|---|---|
| 98258 | Lake Stevens, WA | 3.6 mi |
| 98271 | Marysville, WA | 4.8 mi |
| 98201 | Everett, WA | 4.9 mi |
| 98207 | Everett, WA | 6.1 mi |
| 98203 | Everett, WA | 9.1 mi |
| 98290 | Snohomish, WA | 10.5 mi |
| 98208 | Everett, WA | 11.1 mi |
| 98204 | Everett, WA | 12.1 mi |
| 98275 | Mukilteo, WA | 12.6 mi |
| 98292 | Stanwood, WA | 13.5 mi |
| 98223 | Arlington, WA | 13.7 mi |
| 98236 | Clinton, WA | 13.9 mi |
Questions about 98270
What is the ZIP+4 code for 98270?
98270 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 98270, you need to look up a specific street address to get them.
What city is 98270?
98270 is assigned to Marysville, 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.