ZIP Code 54155 — Oneida, WI
54155 is a standard (street delivery) ZIP code serving Oneida, Wisconsin, in Brown 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 54155 at a glance
| ZIP code | 54155 |
|---|---|
| Primary city | Oneida |
| State | Wisconsin (WI) |
| County | Brown FIPS 55009 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 7,418 |
| Coordinates | 44.519790, -88.190380 |
How ZIP+4 works in 54155
The four digits after the hyphen encode a delivery segment inside 54155. 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 54155 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 54155.
| ZIP | City | Distance |
|---|---|---|
| 54165 | Seymour, WI | 6.2 mi |
| 54313 | Green Bay, WI | 6.2 mi |
| 54304 | Green Bay, WI | 6.3 mi |
| 54303 | Green Bay, WI | 7 mi |
| 54307 | Green Bay, WI | 8.3 mi |
| 54301 | Green Bay, WI | 8.8 mi |
| 54115 | De Pere, WI | 9.3 mi |
| 54302 | Green Bay, WI | 10.6 mi |
| 54162 | Pulaski, WI | 10.8 mi |
| 54173 | Suamico, WI | 11.5 mi |
| 54180 | Wrightstown, WI | 13 mi |
| 54106 | Black Creek, WI | 13.3 mi |
Questions about 54155
What is the ZIP+4 code for 54155?
54155 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 54155, you need to look up a specific street address to get them.
What city is 54155?
54155 is assigned to Oneida, Wisconsin, in Brown 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.