ZIP Code 66442 — Fort Riley, KS
66442 is a standard (street delivery) ZIP code serving Fort Riley, Kansas, in Riley 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 66442 at a glance
| ZIP code | 66442 |
|---|---|
| Primary city | Fort Riley |
| State | Kansas (KS) |
| County | Riley FIPS 20161 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 16,890 |
| Coordinates | 39.093020, -96.789630 |
How ZIP+4 works in 66442
The four digits after the hyphen encode a delivery segment inside 66442. 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 66442 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 66442.
| ZIP | City | Distance |
|---|---|---|
| 66517 | Ogden, KS | 4.7 mi |
| 66514 | Milford, KS | 5.3 mi |
| 66441 | Junction City, KS | 7.7 mi |
| 66503 | Manhattan, KS | 13 mi |
| 66506 | Manhattan, KS | 13.2 mi |
| 66502 | Manhattan, KS | 14.3 mi |
| 67431 | Chapman, KS | 15.1 mi |
| 66531 | Riley, KS | 15.3 mi |
| 67487 | Wakefield, KS | 15.9 mi |
| 66849 | Dwight, KS | 18.3 mi |
| 66872 | White City, KS | 20.4 mi |
| 66449 | Leonardville, KS | 20.7 mi |
Questions about 66442
What is the ZIP+4 code for 66442?
66442 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 66442, you need to look up a specific street address to get them.
What city is 66442?
66442 is assigned to Fort Riley, Kansas, in Riley 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.