Daylight through the yearLongest day (Jun 21): 15 h 28 min5:11 am – 8:39 pmShortest day (Dec 21): 8 h 54 min7:24 am – 4:19 pm
Sun todaySunrise –Sunset –
People893 residentsin the ZIP code areaMedian age 54.2327 householdsMedian household income $97,969Median home value $473,500Median rent $600 a month86% of homes owner-occupiedMedian property tax $4,181 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting2.9% unemployment rate66% of adults are in the labour force, 504 employedMain industries: education and health care 27%, retail 25%, hospitality, food and recreation 13%Average commute 34 minutes78% drive alone, 4% car-pool, 10% walk or cycle, 7% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages43% of adults have a bachelor's degree or higher94% finished high school, 26% hold a graduate degreeLanguages at home: English only 87%, Spanish 9%, Vietnamese 1%5% speak English less than very wellSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 79°F, lows 59°FColdest month February: highs 36°F, lows 18°F24 in of rain a year, on about 57 dayswettest month May59 in of snow a year, on about 27 days6 days above 90°F, 152 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Mt Rushmore Nmem station, 2 mi away
Nearby landmarksIron Mountainpeak · under a mileGRIZZLY BEARcampground · under a milePresidential Trail Trailheadtrailhead · 1.5 miLincoln Borglum Visitor Centervisitor center · 1.6 miDoane Mountainpeak · 1.6 miGrizzly Bear Fallswaterfall · 1.9 miSource: USGS Geographic Names Information System
Parks and public landsBlack Hills National Forestnational forest · within reach · 1,075,125 acresMount Rushmore National Memorialhistoric site · under a mile · 1,234 acresCuster State Parkstate park · 3.3 mi · 70,462 acresSunday Gulch Game Production Areastate conservation land · 7.6 mi · 78 acresWind Cave National Parknational park · 15.9 mi · 33,927 acresSpring Creek Game Production Areastate conservation land · 10.0 mi · 107 acresSource: USGS Protected Areas Database (PAD-US)
Earthquakes7 of magnitude 3 or more within 50 miles since 19700 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 3.7 on 6 Feb 199617 mi away, near Hill City, South DakotaMost recent: magnitude 3.6 on 9 Mar 202515 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 home94% of households have a broadband subscription67% have cable, fibre or DSL10% rely on a mobile data plan alone6% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterKeystoneserves 349 people from ground waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the ZIP area
Elevation4,921 ft1,500 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalMonument Health Custer Hospital10.5 miPost officeKeystone Post Office1.7 miTown hallKeystone City Hall2.4 miPolicePennington County Sheriff's Office1.8 miFire stationKeystone Volunteer Fire Department2.4 miSource: USGS National Structures Dataset
SchoolsWithin 2 miNo schools listedCollegeNational American University14.3 miSource: USGS National Structures Dataset
Getting aroundAirportRapid City Regional Airport RAP22 miInterstateI-19018 miUS highwayUS 16Aunder a mileCoachRapid CityJefferson Lines18 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 57751 ZIP area.
