ZIP Code 66503 — Manhattan, KS
66503 is a standard (street delivery) ZIP code serving Manhattan, 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 66503 at a glance
| ZIP code | 66503 |
|---|---|
| Primary city | Manhattan |
| State | Kansas (KS) |
| County | Riley FIPS 20161 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 17,273 |
| Coordinates | 39.262870, -96.686630 |
How ZIP+4 works in 66503
The four digits after the hyphen encode a delivery segment inside 66503. 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 66503 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.
Other ZIP codes in Manhattan
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 66503.
| ZIP | City | Distance |
|---|---|---|
| 66506 | Manhattan, KS | 7.3 mi |
| 66531 | Riley, KS | 8.6 mi |
| 66517 | Ogden, KS | 10.4 mi |
| 66520 | Olsburg, KS | 10.8 mi |
| 66502 | Manhattan, KS | 11.9 mi |
| 66449 | Leonardville, KS | 12.7 mi |
| 66442 | Fort Riley, KS | 12.9 mi |
| 66535 | Saint George, KS | 13.2 mi |
| 66514 | Milford, KS | 13.9 mi |
| 66554 | Randolph, KS | 16.5 mi |
| 66549 | Westmoreland, KS | 17.9 mi |
| 66441 | Junction City, KS | 20.4 mi |
Questions about 66503
What is the ZIP+4 code for 66503?
66503 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 66503, you need to look up a specific street address to get them.
What city is 66503?
66503 is assigned to Manhattan, 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.