ZIP Code 53806 — Cassville, WI
53806 is a standard (street delivery) ZIP code serving Cassville, Wisconsin, in Grant 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 53806 at a glance
| ZIP code | 53806 |
|---|---|
| Primary city | Cassville |
| State | Wisconsin (WI) |
| County | Grant FIPS 55043 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,514 |
| Coordinates | 42.735540, -90.925440 |
How ZIP+4 works in 53806
The four digits after the hyphen encode a delivery segment inside 53806. 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 53806 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 53806.
| ZIP | City | Distance |
|---|---|---|
| 52066 | North Buena Vista, IA | 3.7 mi |
| 53802 | Beetown, WI | 5.1 mi |
| 53810 | Glen Haven, WI | 7 mi |
| 52053 | Holy Cross, IA | 9.1 mi |
| 52073 | Sherrill, IA | 9.4 mi |
| 53804 | Bloomington, WI | 9.8 mi |
| 52052 | Guttenberg, IA | 9.9 mi |
| 53820 | Potosi, WI | 11.3 mi |
| 52056 | Luxemburg, IA | 11.7 mi |
| 53813 | Lancaster, WI | 13 mi |
| 52065 | New Vienna, IA | 13.8 mi |
| 52039 | Durango, IA | 14.1 mi |
Questions about 53806
What is the ZIP+4 code for 53806?
53806 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 53806, you need to look up a specific street address to get them.
What city is 53806?
53806 is assigned to Cassville, Wisconsin, in Grant 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.