Daylight through the yearLongest day (Jun 21): 15 h 30 min5:10 am – 8:40 pmShortest day (Dec 21): 8 h 53 min7:25 am – 4:18 pm
Sun todaySunrise –Sunset –
People35,595 residentsin the ZIP code areaMedian age 47.815,314 householdsMedian household income $91,457Median home value $389,700Median rent $1,276 a month73% of homes owner-occupiedMedian property tax $4,269 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting2.7% unemployment rate63% of adults are in the labour force, 17,773 employedMain industries: education and health care 34%, professional and business services 12%, retail 10%Average commute 20 minutes80% drive alone, 7% car-pool, 2% walk or cycle, 10% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages50% of adults have a bachelor's degree or higher97% finished high school, 22% hold a graduate degreeLanguages at home: English only 96%, Spanish 2%1% speak English less than very wellSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 83°F, lows 54°FColdest month January: highs 39°F, lows 12°F22 in of rain a year, on about 45 dayswettest month May61 in of snow a year, on about 38 days16 days above 90°F, 190 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Johnson Siding station, 4 mi away; snow from Pactola Dam
Parks and public landsBlack Hills National Forestnational forest · within reach · 1,075,125 acresBraeburn Parkpark · 5.6 miCanyon Lake Parkpark · 6.4 miMount Rushmore National Memorialhistoric site · 9.9 mi · 1,234 acresCuster State Parkstate park · 14.6 mi · 70,462 acresSunday Gulch Game Production Areastate conservation land · 13.1 mi · 78 acresSource: USGS Protected Areas Database (PAD-US)
Earthquakes6 of magnitude 3 or more within 50 miles since 19700 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 3.7 on 6 Feb 199616 mi away, near Hill City, South DakotaMost recent: magnitude 3.6 on 9 Mar 202525 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively LowPennington County, SD, compared with all US countiesHigher-risk hazardsHail Relatively HighWinter weather Relatively HighLightning Relatively HighIce storm Relatively HighSource: FEMA National Risk Index (county level)
Air quality77% of days had good air in 2025282 of 364 days measured81 moderate, 1 unhealthy for sensitive groups daysMedian index 32, worst day 107main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Pennington County monitors, SD
Internet at home92% of households have a broadband subscription79% have cable, fibre or DSL9% rely on a mobile data plan alone4% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterRapid Cityserves 72,009 people from surface waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation4,729 ft1,441 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalSioux San Hospital7.7 miPost officeKeystone Post Office9.6 miTown hallKeystone City Hall9.0 miPolicePennington County Sheriff's Office9.5 miFire stationJohnson Siding Volunteer Fire Department Station 23.6 miSource: USGS National Structures Dataset
SchoolsWithin 2 miNo schools listedCollegeNational American University8.2 miSource: USGS National Structures Dataset
Getting aroundAirportRapid City Regional Airport RAP18 miInterstateI-909.1 miUS highwayUS 3853.9 miCoachRapid CityJefferson Lines10 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 57702 ZIP area.
