Daylight through the yearLongest day (Jun 21): 15 h 31 min5:45 am – 9:16 pmShortest day (Dec 21): 8 h 52 min8:01 am – 4:53 pm
Sun todaySunrise –Sunset –
People163 residentsin the ZIP code areaMedian age 60.195 householdsMedian household income $56,250Median home value $112,50096% of homes owner-occupiedMedian property tax $986 a yearSource: US Census Bureau, American Community Survey 2020-2024
Education and languages26% of adults have a bachelor's degree or higher99% finished high school, 9% hold a graduate degreeLanguages at home: English only 99%, Spanish 1%Source: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 83°F, lows 61°FColdest month January: highs 24°F, lows 5°F26 in of rain a year, on about 54 dayswettest month June41 in of snow a year, on about 20 days10 days above 90°F, 166 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Arlington 1 W station, 14 mi away; snow from De Smet
Nearby landmarksLake Thompsonlake · 6.3 miSpring Lakelake · 6.7 miSource: USGS Geographic Names Information System
Parks and public landsLake Thompson Game Production Areastate conservation land · 3.9 mi · 80 acresWhitewood Sloughstate conservation land · 4.3 mi · 2,000 acresEimersstate conservation land · 5.3 mi · 85 acresDavis Sloughstate conservation land · 6.0 mi · 159 acresLake Thompson Recreation Areastate recreation area · 8.1 mi · 265 acresAplandstate conservation land · 7.7 miSource: USGS Protected Areas Database (PAD-US)
Earthquakes4 of magnitude 3 or more within 50 miles since 19700 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 3.6 on 11 Jul 198234 mi away, near Egan, South DakotaMost recent: magnitude 3.1 on 19 Oct 200514 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Very LowKingsbury County, SD, compared with all US countiesHighest-rated hazardsIce storm Relatively ModerateHail Relatively LowSource: FEMA National Risk Index (county level)
Air quality59% of days had good air in 2025214 of 365 days measured146 moderate, 4 unhealthy for sensitive groups, 1 unhealthy daysMedian index 46, worst day 154main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, nearest monitors: Brookings County, SD, 29 mi away
Internet at home92% of households have a broadband subscription86% have cable, fibre or DSL4% rely on a mobile data plan alone7% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterKingbrook II Rural Water Systemserves 2,715 people from ground waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system in the county
Elevation1,707 ft520 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalAvera De Smet Memorial Hospital15.6 miPost officeOldham Post Office2.2 miTown hallOldham City Hall2.2 miFire stationOldham Volunteer Fire Department2.3 miSource: USGS National Structures Dataset
Getting aroundAirportWatertown Regional Airport ATY49 miInterstateI-2929 miUS highwayUS 1410 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 57051 ZIP area.
