ZIP code · Sister Bay · Wisconsin · United States
ZIP code 54234 — Sister Bay
ZIP code 54234 serves Sister Bay, Wisconsin.
- Postal code
- 54234Single source Value from one source, not cross-checked.
- City
- Sister Bay
- County
- Door
- State
- Wisconsin
- Country
- United States
- Coordinates
- 45.1875, -87.1139 — precision precise (locality)
View on OpenStreetMap - Population
- 2,130 (ZCTA, ACS 5-year)
- Median household income
- $72,762
- Median age
- 59.4
- Time zone
- America/Menominee (UTC−6 / UTC−5 DST)
- Area code
- 920Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page