ZIP Code 82434 — Otto, WY
82434 is a standard (street delivery) ZIP code serving Otto, Wyoming, in Big Horn 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 82434 at a glance
| ZIP code | 82434 |
|---|---|
| Primary city | Otto |
| State | Wyoming (WY) |
| County | Big Horn FIPS 56003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 122 |
| Coordinates | 44.347260, -108.307670 |
How ZIP+4 works in 82434
The four digits after the hyphen encode a delivery segment inside 82434. 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 82434 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 82434.
| ZIP | City | Distance |
|---|---|---|
| 82410 | Basin, WY | 7.9 mi |
| 82411 | Burlington, WY | 10.9 mi |
| 82422 | Emblem, WY | 11 mi |
| 82426 | Greybull, WY | 18 mi |
| 82432 | Manderson, WY | 22.4 mi |
| 82401 | Worland, WY | 24.9 mi |
| 82412 | Byron, WY | 32.9 mi |
| 82440 | Ralston, WY | 37.6 mi |
Questions about 82434
What is the ZIP+4 code for 82434?
82434 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 82434, you need to look up a specific street address to get them.
What city is 82434?
82434 is assigned to Otto, Wyoming, in Big Horn 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.