ZIP Code 54923 — Berlin, WI
54923 is a standard (street delivery) ZIP code serving Berlin, Wisconsin, in Waushara 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 54923 at a glance
| ZIP code | 54923 |
|---|---|
| Primary city | Berlin |
| State | Wisconsin (WI) |
| County | Waushara FIPS 55137 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 8,793 |
| Coordinates | 43.994560, -88.968830 |
How ZIP+4 works in 54923
The four digits after the hyphen encode a delivery segment inside 54923. 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 54923 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 54923.
| ZIP | City | Distance |
|---|---|---|
| 54970 | Redgranite, WI | 8.1 mi |
| 54967 | Poy Sippi, WI | 9.3 mi |
| 54980 | Waukau, WI | 9.9 mi |
| 54941 | Green Lake, WI | 10 mi |
| 54963 | Omro, WI | 10.6 mi |
| 54971 | Ripon, WI | 11.8 mi |
| 54965 | Pine River, WI | 12.1 mi |
| 54968 | Princeton, WI | 12.9 mi |
| 54960 | Neshkoro, WI | 13.1 mi |
| 54964 | Pickett, WI | 13.5 mi |
| 54986 | Winneconne, WI | 13.8 mi |
| 54982 | Wautoma, WI | 16.9 mi |
Questions about 54923
What is the ZIP+4 code for 54923?
54923 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 54923, you need to look up a specific street address to get them.
What city is 54923?
54923 is assigned to Berlin, Wisconsin, in Waushara 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.