ZIP Code 54025 — Somerset, WI
54025 is a standard (street delivery) ZIP code serving Somerset, Wisconsin, in St. Croix 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 54025 at a glance
| ZIP code | 54025 |
|---|---|
| Primary city | Somerset |
| State | Wisconsin (WI) |
| County | St. Croix FIPS 55109 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 7,612 |
| Coordinates | 45.141840, -92.689970 |
How ZIP+4 works in 54025
The four digits after the hyphen encode a delivery segment inside 54025. 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 54025 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 54025.
| ZIP | City | Distance |
|---|---|---|
| 54082 | Houlton, WI | 5.9 mi |
| 55047 | Marine On Saint Croix, MN | 7.8 mi |
| 54017 | New Richmond, WI | 8.4 mi |
| 55082 | Stillwater, MN | 8.7 mi |
| 54026 | Star Prairie, WI | 9.6 mi |
| 54020 | Osceola, WI | 9.7 mi |
| 55003 | Bayport, MN | 10 mi |
| 54016 | Hudson, WI | 11.2 mi |
| 55073 | Scandia, MN | 11.3 mi |
| 54023 | Roberts, WI | 13.2 mi |
| 55115 | Saint Paul, MN | 13.7 mi |
| 55038 | Hugo, MN | 14.3 mi |
Questions about 54025
What is the ZIP+4 code for 54025?
54025 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 54025, you need to look up a specific street address to get them.
What city is 54025?
54025 is assigned to Somerset, Wisconsin, in St. Croix 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.