Local servicesPost officeSister Bay Post Office1.1 miTown hallSister Bay Village Hall1.2 miFire stationSister Bay - Liberty Grove Fire Department South Stationunder a mileSource: USGS National Structures Dataset
Getting aroundAirportDelta County Airport ESC37 miUS highwayUS 4125 miCoachCedar River (Shell Gas Station)Indian Trails20 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 54234 ZIP area.
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Local Information
Distances in these cards are measured from the centre of the 54234 ZIP area.
Daylight through the yearLongest day (Jun 21): 15 h 39 min5:00 am – 8:39 pmShortest day (Dec 21): 8 h 45 min7:24 am – 4:08 pm
Sun todaySunrise –Sunset –
People2,158 residentsin the ZIP code areaMedian age 60.31,121 householdsMedian household income $74,583Median home value $456,300Median rent $1,328 a month69% of homes owner-occupiedMedian property tax $3,574 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting3.5% unemployment rate48% of adults are in the labour force, 857 employedMain industries: hospitality, food and recreation 24%, retail 15%, education and health care 14%Average commute 14 minutes70% drive alone, 1% car-pool, 5% walk or cycle, 22% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages52% of adults have a bachelor's degree or higher99% finished high school, 21% hold a graduate degreeLanguages at home: English only 99%Source: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 80°F, lows 58°FColdest month January: highs 27°F, lows 12°F31 in of rain a year, on about 72 dayswettest month October62 in of snow a year, on about 26 days1 days above 90°F, 155 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Ephraim 1ne-wwtp station, 3 mi away
Parks and public landsSister Islands Habitat Presvstate recreation area · 3.6 miMud Lake Wildlife Area-Doorstate recreation area · 3.7 mi · 2,433 acresPeninsula State Parkstate park · 4.7 mi · 3,699 acresRowleys Bay State Public Accessstate recreation area · 4.1 miNewport State Parkstate park · 5.3 mi · 2,467 acresGravel Island National Wildlife Refugenational wildlife refuge · 6.4 miSource: USGS Protected Areas Database (PAD-US)
EarthquakesNone of magnitude 3 or more within 50 miles since 1970Source: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively LowDoor County, WI, compared with all US countiesHighest-rated hazardsCold wave Relatively ModerateHail Relatively LowSource: FEMA National Risk Index (county level)
Air quality86% of days had good air in 2025170 of 198 days measured27 moderate, 1 unhealthy for sensitive groups daysMedian index 38, worst day 108main pollutant: ozoneSource: US EPA Air Quality Index, Door County monitors, WI
Internet at home91% of households have a broadband subscription69% have cable, fibre or DSL6% rely on a mobile data plan alone7% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterSister Bay Waterworksserves 1,000 people from ground waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation655 ft200 m above sea levelSource: USGS 3D Elevation Program
