Postal reference / United States
54234Sister Bay, Wisconsin
ZIP code 54234 is a United States postal code for Sister Bay, Wisconsin. Its county association is Door County. The map reference point is at 45.1875, -87.1139.
- State / territory
- Wisconsin
- Recorded place name
- Sister Bay
- County association
- Door
- Estimated coordinate
- 45.1875, -87.1139
View on OpenStreetMap - ZIP prefix
- 542 · 30 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
- 23.445 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.
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Browse the other 895 ZIP codes recorded for Wisconsin, sorted by code with place and county.
Wisconsin directoryNearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 54211 | Ephraim | WI | Door | 3.4 |
| 54210 | Ellison Bay | WI | Door | 5.7 |
| 54212 | Fish Creek | WI | Door | 6.7 |
| 54202 | Baileys Harbor | WI | Door | 9.4 |
| 54209 | Egg Harbor | WI | Door | 14.7 |
| 54246 | Washington Island | WI | Door | 16.6 |
| 49893 | Wallace | MI | Menominee | 24.0 |
| 49858 | Menominee | MI | Menominee | 25.0 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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