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 FIPS 55029
- State
- Wisconsin
- Country
- United States
- Coordinates
- 45.1875, -87.1139 — precision precise (locality)
View on OpenStreetMap - Population
- 2,130 (ZCTA, ACS 5-year)
- Population density
- 91 / sq mi
- Land area
- 23.4 sq mi (60.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $72,762
- Per-capita income
- $49,661
- Median age
- 59.4
- Households
- 1,097
- Housing units
- 2,350
- Median home value
- $419,600
- Median gross rent
- $1,140 / month
- Congressional district
- WI-8 (119th Congress)
- USDA hardiness zone
- 5b (-15 to -10 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- 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.
Tools: compare 54234 with another ZIP · ZIPs within 25 miles · distance from 54234
Map of ZIP code 54234
Climate — monthly normals
Warmest month Jul (avg high 80°F), coldest Jan (avg low 12°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 27 | 29 | 39 | 51 | 65 | 74 | 80 | 78 | 70 | 57 | 44 | 33 |
| Avg low °F | 12 | 13 | 21 | 31 | 42 | 53 | 58 | 57 | 51 | 41 | 30 | 19 |
| Precip in | 1.7 | 1.1 | 1.7 | 2.7 | 3.5 | 3.3 | 3.0 | 3.0 | 3.4 | 3.6 | 2.3 | 1.7 |
NOAA 1991–2020 climate normals from the nearest station: EPHRAIM 1NE-WWTP (2.2 mi) · NOAA NCEI
Places in ZIP 54234
- 2 schools
- 1 hospitals & clinics
- 1 supermarkets
- 8 restaurants & cafés
- 1 bars & pubs
- 4 parks
- 1 playgrounds
- 1 libraries
- 2 banks
- 4 gas stations
- 1 EV charging stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
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) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page