ZIP Code 54542 — Long Lake, WI
54542 is a standard (street delivery) ZIP code serving Long Lake, Wisconsin, in Forest 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 54542 at a glance
| ZIP code | 54542 |
|---|---|
| Primary city | Long Lake |
| State | Wisconsin (WI) |
| County | Forest FIPS 55041 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 702 |
| Coordinates | 45.921270, -88.725360 |
How ZIP+4 works in 54542
The four digits after the hyphen encode a delivery segment inside 54542. 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 54542 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 54542.
| ZIP | City | Distance |
|---|---|---|
| 49915 | Caspian, MI | 11 mi |
| 49927 | Gaastra, MI | 11.3 mi |
| 54511 | Argonne, WI | 14.6 mi |
| 54120 | Fence, WI | 15.9 mi |
| 54554 | Phelps, WI | 18.6 mi |
| 54562 | Three Lakes, WI | 18.7 mi |
| 49935 | Iron River, MI | 18.9 mi |
| 49902 | Alpha, MI | 18.9 mi |
| 54121 | Florence, WI | 19.4 mi |
| 54103 | Armstrong Creek, WI | 21.7 mi |
| 54521 | Eagle River, WI | 25.4 mi |
| 49920 | Crystal Falls, MI | 25.4 mi |
Questions about 54542
What is the ZIP+4 code for 54542?
54542 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 54542, you need to look up a specific street address to get them.
What city is 54542?
54542 is assigned to Long Lake, Wisconsin, in Forest 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.