ZIP Code 54139 — Lena, WI
54139 is a standard (street delivery) ZIP code serving Lena, Wisconsin, in Oconto 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 54139 at a glance
| ZIP code | 54139 |
|---|---|
| Primary city | Lena |
| State | Wisconsin (WI) |
| County | Oconto FIPS 55083 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,130 |
| Coordinates | 44.953900, -88.071520 |
How ZIP+4 works in 54139
The four digits after the hyphen encode a delivery segment inside 54139. 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 54139 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 54139.
| ZIP | City | Distance |
|---|---|---|
| 54112 | Coleman, WI | 6.4 mi |
| 54153 | Oconto, WI | 8.1 mi |
| 54154 | Oconto Falls, WI | 8.4 mi |
| 54101 | Abrams, WI | 11.5 mi |
| 54161 | Pound, WI | 12.5 mi |
| 54157 | Peshtigo, WI | 14.3 mi |
| 54127 | Green Valley, WI | 14.5 mi |
| 54124 | Gillett, WI | 14.7 mi |
| 54141 | Little Suamico, WI | 15.9 mi |
| 54137 | Krakow, WI | 16.2 mi |
| 54171 | Sobieski, WI | 16.3 mi |
| 54111 | Cecil, WI | 17.8 mi |
Questions about 54139
What is the ZIP+4 code for 54139?
54139 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 54139, you need to look up a specific street address to get them.
What city is 54139?
54139 is assigned to Lena, Wisconsin, in Oconto 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.