Daylight through the yearLongest day (Jun 21): 15 h 35 min5:42 am – 9:17 pmShortest day (Dec 21): 8 h 48 min8:02 am – 4:50 pm
Sun todaySunrise –Sunset –
People1,429 residentsin the ZIP code areaMedian age 34.3510 householdsMedian household income $92,424Median home value $236,600Median rent $1,133 a month88% of homes owner-occupiedMedian property tax $2,476 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting1.0% unemployment rate78% of adults are in the labour force, 764 employedMain industries: education and health care 21%, manufacturing 19%, farming, forestry and mining 10%Average commute 25 minutes76% drive alone, 15% car-pool, 3% walk or cycle, 7% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages29% of adults have a bachelor's degree or higher98% finished high school, 6% hold a graduate degreeLanguages at home: English only 100%Source: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 81°F, lows 58°FColdest month January: highs 20°F, lows 2°F25 in of rain a year, on about 49 dayswettest month June34 in of snow a year, on about 28 days9 days above 90°F, 187 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Castlewood station, 2 mi away; snow from Hayti
Nearby landmarksLake Florencelake · 4.5 miDry Lakelake · 6.6 miSource: USGS Geographic Names Information System
Parks and public landsPreston Sloughstate conservation land · 3.5 miSioux Poinsettstate conservation land · 4.5 mi · 2,282 acresSaaranen Beachstate park · 9.0 miMickelson Marshstate conservation land · 7.7 mi · 1,679 acresAlmos And Outlet Addition Wildlife Management Areastate conservation land · 7.9 mi · 103 acresHalde Outletstate conservation land · 10.5 miSource: USGS Protected Areas Database (PAD-US)
EarthquakesNone of magnitude 3 or more within 50 miles since 1970Source: USGS Earthquake Catalog
Natural hazardsOverall risk Very LowHamlin County, SD, compared with all US countiesHighest-rated hazardsIce storm Relatively ModerateHail Relatively LowSource: FEMA National Risk Index (county level)
Air quality78% of days had good air in 2025283 of 363 days measured76 moderate, 3 unhealthy for sensitive groups, 1 unhealthy daysMedian index 35, worst day 154main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, nearest monitors: Codington County, SD, 20 mi away
Internet at home87% of households have a broadband subscription71% have cable, fibre or DSL15% rely on a mobile data plan alone10% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterCastlewoodserves 698 people from ground water purchasedNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the ZIP area
Elevation1,722 ft525 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalPrairie Lakes Healthcare System15.1 miPost officeCastlewood Post Office2.0 miTown hallCastlewood City Hall1.9 miPoliceCastlewood Police Department1.9 miFire stationCastlewood Fire Department1.9 miSource: USGS National Structures Dataset
SchoolsWithin 2 mi1 school1 otherSchoolCastlewood School1.9 miCollegeLake Area Technical Institute13.9 miSource: USGS National Structures Dataset
Getting aroundAirportWatertown Regional Airport ATY16 miInterstateI-295.9 miUS highwayUS 815.7 miCoachWatertownJefferson Lines13 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 57223 ZIP area.
