ZIP Code 83555 — Winchester, ID
83555 is a standard (street delivery) ZIP code serving Winchester, Idaho, in Nez Perce 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 83555 at a glance
| ZIP code | 83555 |
|---|---|
| Primary city | Winchester |
| State | Idaho (ID) |
| County | Nez Perce FIPS 16069 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 493 |
| Coordinates | 46.086620, -116.722210 |
How ZIP+4 works in 83555
The four digits after the hyphen encode a delivery segment inside 83555. 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 83555 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 83555.
| ZIP | City | Distance |
|---|---|---|
| 83501 | Lewiston, ID | 13.2 mi |
| 83526 | Ferdinand, ID | 15.2 mi |
| 83523 | Craigmont, ID | 15.5 mi |
| 83522 | Cottonwood, ID | 16 mi |
| 83540 | Lapwai, ID | 18.2 mi |
| 83524 | Culdesac, ID | 19 mi |
| 83548 | Reubens, ID | 20.8 mi |
| 99402 | Asotin, WA | 21.6 mi |
| 83533 | Greencreek, ID | 23.1 mi |
| 99401 | Anatone, WA | 26.4 mi |
| 83543 | Nezperce, ID | 26.5 mi |
| 83545 | Peck, ID | 27.5 mi |
Questions about 83555
What is the ZIP+4 code for 83555?
83555 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 83555, you need to look up a specific street address to get them.
What city is 83555?
83555 is assigned to Winchester, Idaho, in Nez Perce 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.