ZIP Code 54540 — Land O'lakes, WI
54540 is a standard (street delivery) ZIP code serving Land O'lakes, Wisconsin, in Vilas 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 54540 at a glance
| ZIP code | 54540 |
|---|---|
| Primary city | Land O'lakes |
| State | Wisconsin (WI) |
| County | Vilas FIPS 55125 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 971 |
| Coordinates | 46.155050, -89.382160 |
How ZIP+4 works in 54540
The four digits after the hyphen encode a delivery segment inside 54540. 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 54540 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 54540.
| ZIP | City | Distance |
|---|---|---|
| 54561 | Star Lake, WI | 7 mi |
| 54519 | Conover, WI | 8.9 mi |
| 49969 | Watersmeet, MI | 10.2 mi |
| 54560 | Sayner, WI | 12.6 mi |
| 54512 | Boulder Junction, WI | 14.2 mi |
| 54554 | Phelps, WI | 16.8 mi |
| 54558 | Saint Germain, WI | 16.9 mi |
| 54521 | Eagle River, WI | 17.6 mi |
| 54557 | Presque Isle, WI | 18.4 mi |
| 54568 | Woodruff, WI | 20 mi |
| 49947 | Marenisco, MI | 21.5 mi |
| 54545 | Manitowish Waters, WI | 22.5 mi |
Questions about 54540
What is the ZIP+4 code for 54540?
54540 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 54540, you need to look up a specific street address to get them.
What city is 54540?
54540 is assigned to Land O'lakes, Wisconsin, in Vilas 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.