ZIP Code 54443 — Junction City, WI
54443 is a standard (street delivery) ZIP code serving Junction City, Wisconsin, in Portage 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 54443 at a glance
| ZIP code | 54443 |
|---|---|
| Primary city | Junction City |
| State | Wisconsin (WI) |
| County | Portage FIPS 55097 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,145 |
| Coordinates | 44.612430, -89.752640 |
How ZIP+4 works in 54443
The four digits after the hyphen encode a delivery segment inside 54443. 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 54443 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 54443.
| ZIP | City | Distance |
|---|---|---|
| 54454 | Milladore, WI | 6.5 mi |
| 54481 | Stevens Point, WI | 8.6 mi |
| 54475 | Rudolph, WI | 9.2 mi |
| 54455 | Mosinee, WI | 10.9 mi |
| 54412 | Auburndale, WI | 11.9 mi |
| 54482 | Stevens Point, WI | 12.7 mi |
| 54410 | Arpin, WI | 14.4 mi |
| 54489 | Vesper, WI | 16.6 mi |
| 54423 | Custer, WI | 16.7 mi |
| 54467 | Plover, WI | 17.1 mi |
| 54441 | Hewitt, WI | 17.5 mi |
| 54495 | Wisconsin Rapids, WI | 18.2 mi |
Questions about 54443
What is the ZIP+4 code for 54443?
54443 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 54443, you need to look up a specific street address to get them.
What city is 54443?
54443 is assigned to Junction City, Wisconsin, in Portage 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.