ZIP Code 98601 — Amboy, WA
98601 is a standard (street delivery) ZIP code serving Amboy, Washington, in Clark 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 98601 at a glance
| ZIP code | 98601 |
|---|---|
| Primary city | Amboy |
| State | Washington (WA) |
| County | Clark FIPS 53011 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 2,585 |
| Coordinates | 45.934390, -122.438570 |
How ZIP+4 works in 98601
The four digits after the hyphen encode a delivery segment inside 98601. 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 98601 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 98601.
| ZIP | City | Distance |
|---|---|---|
| 98675 | Yacolt, WA | 7.1 mi |
| 98603 | Ariel, WA | 7.5 mi |
| 98629 | La Center, WA | 9.2 mi |
| 98604 | Battle Ground, WA | 9.8 mi |
| 98674 | Woodland, WA | 10.5 mi |
| 98625 | Kalama, WA | 13.4 mi |
| 98606 | Brush Prairie, WA | 14.2 mi |
| 98642 | Ridgefield, WA | 15.6 mi |
| 98616 | Cougar, WA | 16.6 mi |
| 98686 | Vancouver, WA | 17 mi |
| 97018 | Columbia City, OR | 18.1 mi |
| 98682 | Vancouver, WA | 18.2 mi |
Questions about 98601
What is the ZIP+4 code for 98601?
98601 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 98601, you need to look up a specific street address to get them.
What city is 98601?
98601 is assigned to Amboy, Washington, in Clark 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.