ZIP Code 66763 — Frontenac, KS
66763 is a standard (street delivery) ZIP code serving Frontenac, Kansas, in Crawford 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 66763 at a glance
| ZIP code | 66763 |
|---|---|
| Primary city | Frontenac |
| State | Kansas (KS) |
| County | Crawford FIPS 20037 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,392 |
| Coordinates | 37.460630, -94.696500 |
How ZIP+4 works in 66763
The four digits after the hyphen encode a delivery segment inside 66763. 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 66763 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 66763.
| ZIP | City | Distance |
|---|---|---|
| 66735 | Franklin, KS | 4.3 mi |
| 66762 | Pittsburg, KS | 4.6 mi |
| 66756 | Mulberry, KS | 6 mi |
| 64769 | Mindenmines, MO | 7.2 mi |
| 66712 | Arma, KS | 7.2 mi |
| 66760 | Opolis, KS | 8.9 mi |
| 64832 | Asbury, MO | 10.8 mi |
| 66743 | Girard, KS | 10.9 mi |
| 66781 | Weir, KS | 11.8 mi |
| 66724 | Cherokee, KS | 12 mi |
| 64762 | Liberal, MO | 12.2 mi |
| 66711 | Arcadia, KS | 12.4 mi |
Questions about 66763
What is the ZIP+4 code for 66763?
66763 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 66763, you need to look up a specific street address to get them.
What city is 66763?
66763 is assigned to Frontenac, Kansas, in Crawford 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.