ZIP Code 66955 — Mahaska, KS
66955 is a standard (street delivery) ZIP code serving Mahaska, Kansas, in Washington 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 66955 at a glance
| ZIP code | 66955 |
|---|---|
| Primary city | Mahaska |
| State | Kansas (KS) |
| County | Washington FIPS 20201 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 47 |
| Coordinates | 39.979840, -97.317150 |
How ZIP+4 works in 66955
The four digits after the hyphen encode a delivery segment inside 66955. 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 66955 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 66955.
| ZIP | City | Distance |
|---|---|---|
| 66960 | Narka, KS | 6.5 mi |
| 68429 | Reynolds, NE | 6.6 mi |
| 66944 | Haddam, KS | 9.7 mi |
| 66958 | Morrowville, KS | 9.7 mi |
| 68375 | Hubbell, NE | 9.9 mi |
| 66959 | Munden, KS | 12.2 mi |
| 68350 | Endicott, NE | 12.6 mi |
| 68352 | Fairbury, NE | 13 mi |
| 68362 | Gilead, NE | 13.3 mi |
| 66940 | Cuba, KS | 14.2 mi |
| 68327 | Chester, NE | 16.2 mi |
| 66946 | Hollenberg, KS | 16.7 mi |
Questions about 66955
What is the ZIP+4 code for 66955?
66955 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 66955, you need to look up a specific street address to get them.
What city is 66955?
66955 is assigned to Mahaska, Kansas, in Washington 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.