ZIP Code 66554 — Randolph, KS
66554 is a standard (street delivery) ZIP code serving Randolph, 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 66554 at a glance
| ZIP code | 66554 |
|---|---|
| Primary city | Randolph |
| State | Kansas (KS) |
| County | Riley FIPS 20161 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 770 |
| Coordinates | 39.488990, -96.784450 |
How ZIP+4 works in 66554
The four digits after the hyphen encode a delivery segment inside 66554. 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 66554 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 66554.
| ZIP | City | Distance |
|---|---|---|
| 66449 | Leonardville, KS | 8 mi |
| 67447 | Green, KS | 10 mi |
| 66520 | Olsburg, KS | 10.5 mi |
| 66531 | Riley, KS | 12.5 mi |
| 66548 | Waterville, KS | 12.9 mi |
| 66411 | Blue Rapids, KS | 13 mi |
| 66933 | Barnes, KS | 13.3 mi |
| 66943 | Greenleaf, KS | 16.1 mi |
| 66503 | Manhattan, KS | 16.4 mi |
| 66549 | Westmoreland, KS | 19.3 mi |
| 66962 | Palmer, KS | 19.7 mi |
| 66427 | Frankfort, KS | 21.5 mi |
Questions about 66554
What is the ZIP+4 code for 66554?
66554 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 66554, you need to look up a specific street address to get them.
What city is 66554?
66554 is assigned to Randolph, 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.