ZIP Code 99401 — Anatone, WA
99401 is a standard (street delivery) ZIP code serving Anatone, Washington, in Asotin 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 99401 at a glance
| ZIP code | 99401 |
|---|---|
| Primary city | Anatone |
| State | Washington (WA) |
| County | Asotin FIPS 53003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 163 |
| Coordinates | 46.090410, -117.273360 |
How ZIP+4 works in 99401
The four digits after the hyphen encode a delivery segment inside 99401. 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 99401 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 99401.
| ZIP | City | Distance |
|---|---|---|
| 99402 | Asotin, WA | 8.9 mi |
| 83501 | Lewiston, ID | 20 mi |
| 99403 | Clarkston, WA | 20.1 mi |
| 97828 | Enterprise, OR | 26 mi |
| 83555 | Winchester, ID | 26.4 mi |
| 99347 | Pomeroy, WA | 27.2 mi |
| 99179 | Uniontown, WA | 28.8 mi |
| 83540 | Lapwai, ID | 29.4 mi |
| 97885 | Wallowa, OR | 32.4 mi |
| 99113 | Colton, WA | 34.4 mi |
| 83832 | Genesee, ID | 36.4 mi |
| 83535 | Juliaetta, ID | 40.6 mi |
Questions about 99401
What is the ZIP+4 code for 99401?
99401 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 99401, you need to look up a specific street address to get them.
What city is 99401?
99401 is assigned to Anatone, Washington, in Asotin 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.