Daylight through the yearLongest day (Jun 21): 15 h 21 min5:33 am – 8:54 pmShortest day (Dec 21): 9 h 1 min7:39 am – 4:40 pm
Sun todaySunrise –Sunset –
People157 residentsin the ZIP code areaMedian age 38.156 householdsMedian household income $69,167Median home value $86,300100% of homes owner-occupiedMedian property tax $800 a yearSource: US Census Bureau, American Community Survey 2020-2024
ClimateWarmest month July: highs 83°F, lows 62°FColdest month January: highs 25°F, lows 8°F38 in of rain a year, on about 67 dayswettest month June44 in of snow a year, on about 30 days12 days above 90°F, 157 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Hampton station, 14 mi away; snow from Mason City Muni Ap
Nearby landmarksWinnebago Riverriver · 9.5 miSource: USGS Geographic Names Information System
Parks and public landsZeidler Parkpark · 7.2 miWest Fork Wildlife Areastate conservation land · 8.2 mi · 115 acresLinn Grove Parkpark · 8.2 miFossil & Prairie Park State Preservestate conservation land · 8.7 mi · 283 acresClaybanks Forest State Preservestate conservation land · 11.3 miBeed's Lake State Parkstate park · 14.4 mi · 289 acresSource: USGS Protected Areas Database (PAD-US)
EarthquakesNone of magnitude 3 or more within 50 miles since 1970Source: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively LowCerro Gordo County, IA, compared with all US countiesHigher-risk hazardsDrought Relatively HighWinter weather Relatively HighSource: FEMA National Risk Index (county level)
Air quality53% of days had good air in 2025195 of 365 days measured168 moderate, 1 unhealthy for sensitive groups, 1 unhealthy daysMedian index 49, worst day 158main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, nearest monitors: Black Hawk County, IA, 49 mi away
Internet at home82% of households have a broadband subscription59% have cable, fibre or DSL23% rely on a mobile data plan alone18% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterMason City Water Departmentserves 27,338 people from ground waterNo health-based violations since 20211 monitoring or reporting violation since 2021Source: US EPA Safe Drinking Water Information System, largest system in the county
Elevation1,100 ft335 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalFranklin General Hospital14.6 miPost officeAredale Post Office6.8 miTown hallRockwell City Hall8.2 miPoliceRockwell Police Department8.2 miFire stationDougherty Fire Departmentunder a mileSource: USGS National Structures Dataset
Getting aroundAirportMason City Municipal Airport MCW21 miMajor airportDes Moines International Airport DSM101 miInterstateI-3515 miUS highwayUS 657.9 miCoachMason City (Airport)Jefferson Lines21 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 50433 ZIP area.
