ZIP Code 54945 — Iola, WI
54945 is a standard (street delivery) ZIP code serving Iola, Wisconsin, in Waupaca 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 54945 at a glance
| ZIP code | 54945 |
|---|---|
| Primary city | Iola |
| State | Wisconsin (WI) |
| County | Waupaca FIPS 55135 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,470 |
| Coordinates | 44.576040, -89.137390 |
How ZIP+4 works in 54945
The four digits after the hyphen encode a delivery segment inside 54945. 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 54945 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 54945.
| ZIP | City | Distance |
|---|---|---|
| 54926 | Big Falls, WI | 6.5 mi |
| 54977 | Scandinavia, WI | 8.3 mi |
| 54407 | Amherst Junction, WI | 8.4 mi |
| 54962 | Ogdensburg, WI | 8.6 mi |
| 54458 | Nelsonville, WI | 10 mi |
| 54486 | Tigerton, WI | 11.2 mi |
| 54473 | Rosholt, WI | 11.9 mi |
| 54949 | Manawa, WI | 12.6 mi |
| 54950 | Marion, WI | 12.6 mi |
| 54423 | Custer, WI | 13.7 mi |
| 54406 | Amherst, WI | 14.3 mi |
| 54499 | Wittenberg, WI | 14.9 mi |
Questions about 54945
What is the ZIP+4 code for 54945?
54945 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 54945, you need to look up a specific street address to get them.
What city is 54945?
54945 is assigned to Iola, Wisconsin, in Waupaca 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.