ZIP Code 66090 — Wathena, KS
66090 is a standard (street delivery) ZIP code serving Wathena, Kansas, in Doniphan 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 66090 at a glance
| ZIP code | 66090 |
|---|---|
| Primary city | Wathena |
| State | Kansas (KS) |
| County | Doniphan FIPS 20043 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,380 |
| Coordinates | 39.783910, -94.970410 |
How ZIP+4 works in 66090
The four digits after the hyphen encode a delivery segment inside 66090. 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 66090 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 66090.
| ZIP | City | Distance |
|---|---|---|
| 66024 | Elwood, KS | 5.2 mi |
| 64501 | Saint Joseph, MO | 6.8 mi |
| 64503 | Saint Joseph, MO | 7 mi |
| 64504 | Saint Joseph, MO | 7.4 mi |
| 64505 | Saint Joseph, MO | 8.4 mi |
| 64421 | Amazonia, MO | 8.9 mi |
| 64506 | Saint Joseph, MO | 8.9 mi |
| 66087 | Troy, KS | 9 mi |
| 64507 | Saint Joseph, MO | 11.8 mi |
| 66008 | Bendena, KS | 11.9 mi |
| 64485 | Savannah, MO | 14.2 mi |
| 64440 | De Kalb, MO | 14.4 mi |
Questions about 66090
What is the ZIP+4 code for 66090?
66090 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 66090, you need to look up a specific street address to get them.
What city is 66090?
66090 is assigned to Wathena, Kansas, in Doniphan 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.