ZIP Code 53057 — Mount Calvary, WI
53057 is a standard (street delivery) ZIP code serving Mount Calvary, Wisconsin, in Fond du Lac 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 53057 at a glance
| ZIP code | 53057 |
|---|---|
| Primary city | Mount Calvary |
| State | Wisconsin (WI) |
| County | Fond du Lac FIPS 55039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,882 |
| Coordinates | 43.790990, -88.246710 |
How ZIP+4 works in 53057
The four digits after the hyphen encode a delivery segment inside 53057. 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 53057 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 53057.
| ZIP | City | Distance |
|---|---|---|
| 53079 | Saint Cloud, WI | 3.2 mi |
| 53049 | Malone, WI | 6.8 mi |
| 53023 | Glenbeulah, WI | 7 mi |
| 53019 | Eden, WI | 7.2 mi |
| 54935 | Fond Du Lac, WI | 9.4 mi |
| 54937 | Fond Du Lac, WI | 9.5 mi |
| 53011 | Cascade, WI | 12.4 mi |
| 53061 | New Holstein, WI | 12.5 mi |
| 53010 | Campbellsport, WI | 12.5 mi |
| 53020 | Elkhart Lake, WI | 12.6 mi |
| 53073 | Plymouth, WI | 13 mi |
| 54979 | Van Dyne, WI | 15.5 mi |
Questions about 53057
What is the ZIP+4 code for 53057?
53057 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 53057, you need to look up a specific street address to get them.
What city is 53057?
53057 is assigned to Mount Calvary, Wisconsin, in Fond du Lac 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.