Postal reference / United States

53806Cassville, Wisconsin

ZIP code 53806 is a United States postal code for Cassville, Wisconsin. Its county association is Grant County. The map reference point is at 42.7288, -90.9608.

State / territory
Wisconsin
Recorded place name
Cassville
County association
Grant
Estimated coordinate
42.7288, -90.9608
View on OpenStreetMap
ZIP prefix
538 · 22 ZIP codes share it
Data source
GeoNames postal reference, snapshot September 26, 2026

GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.

Area

Land area
69.508 sq mi (2023 Census Gazetteer)

Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.

Need the last four digits?

ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.

Find ZIP+4

Explore Wisconsin

Browse the other 895 ZIP codes recorded for Wisconsin, sorted by code with place and county.

Wisconsin directory

Nearby ZIP code reference points

ZIP codePlaceStateCounty associationMiles
52066North Buena VistaIAClayton3.5
53802BeetownWIGrant6.0
53810Glen HavenWIGrant6.6
52052GuttenbergIAClayton8.3
52053Holy CrossIADubuque10.2
53804BloomingtonWIGrant10.3
52073SherrillIADubuque10.8
52056LuxemburgIADubuque11.6

Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.

Verify a mailing address

For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.

Open USPS address lookup