ZIP Code 66781 — Weir, KS
66781 is a standard (street delivery) ZIP code serving Weir, Kansas, in Cherokee 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 66781 at a glance
| ZIP code | 66781 |
|---|---|
| Primary city | Weir |
| State | Kansas (KS) |
| County | Cherokee FIPS 20021 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,183 |
| Coordinates | 37.291140, -94.728060 |
How ZIP+4 works in 66781
The four digits after the hyphen encode a delivery segment inside 66781. 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 66781 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 66781.
| ZIP | City | Distance |
|---|---|---|
| 66773 | Scammon, KS | 5 mi |
| 66760 | Opolis, KS | 6.8 mi |
| 66762 | Pittsburg, KS | 7.2 mi |
| 66724 | Cherokee, KS | 8.4 mi |
| 64832 | Asbury, MO | 9.2 mi |
| 66782 | West Mineral, KS | 10.9 mi |
| 64834 | Carl Junction, MO | 11.3 mi |
| 66763 | Frontenac, KS | 11.8 mi |
| 66739 | Galena, KS | 12.2 mi |
| 66725 | Columbus, KS | 12.7 mi |
| 64855 | Oronogo, MO | 13.3 mi |
| 66770 | Riverton, KS | 14.6 mi |
Questions about 66781
What is the ZIP+4 code for 66781?
66781 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 66781, you need to look up a specific street address to get them.
What city is 66781?
66781 is assigned to Weir, Kansas, in Cherokee 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.