SD area data
Keystone, SD
Keystone, SD.
Population: 893 (Census ACS)
Home values & appreciation
- Median home value
- $542,854
- 1-year appreciation
- +3.7%
- 3-year appreciation
- +7.3%
- 5-year appreciation
- +36.1%
- 10-year appreciation
- +108.5%
- All-time peak (2026-03)
- $545,017
- House Price Index
- 496.2 (+2.9% YoY)
Market activity
- Median sale price
- $685,000
- Median list price
- $1.06M
- Median days on market
- 299 days
- Sale-to-list ratio
- 94.7%
- Active listings
- 5
- 1-year forecast
- +2.3%
Rents
- 2-bedroom fair-market rent (HUD reference)
- $1,218/mo
- 3BR fair-market rent
- $1,584/mo
Affordability
- Cost of living index (Below Average)
- 90.0 (100 = US avg)
- Electricity rate (state-level)
- 13.4¢/kWh
- Natural gas rate (state-level)
- $9.90/MCF
- 30-year mortgage rate (national)
- 6.66%
- 15-year mortgage rate (national)
- 6.00%
Natural hazards & flood risk
- Overall hazard risk
- Relatively Low
- Top hazards
- hail, iceStorm, lightning, winterWeather, coldWave
- FEMA flood zone
- B
- Flood risk level
- Moderate
Climate (30-year normals)
- Annual precipitation
- 22.3 in
Air quality
- Air quality rating
- Good
- Median AQI (annual)
- 45
- Days with Good air quality
- 216
- Days with Unhealthy air quality
- 4
Walkability & transit
- Walkability index
- 6.7 / 20
- Transit service frequency
- -99,999
Amenities
- National parks within ~60 mi
- 4
- Nearest national park
- Mount Rushmore National Memorial (0 mi)
- Nearest airport
- Custer State Park Airport (12 mi)
- Nearest major airport
- Rapid City Regional Airport (RAP) (23 mi)
- Hospitals nearby (~15 mi)
- 3
- Avg hospital rating
- 4.0 / 5
- Solar radiation rating
- Fair (4.3 kWh/m²/day)
Migration
- Net migration
- +1,063 tax filers
Housing stock
- Median year housing built
- 1,991
- Median annual property tax
- $4,181
- Households with broadband internet
- 66.7%
Employment & development
- Total county employment
- 53,420
- Average weekly wage
- $1,048
- Top industries (by employment)
- Health Care, Accommodation & Food, Construction
- Annual residential building permits (county)
- 447
Area data compiled from public government, academic, and industry research feeds. Data sources →
Data last updated
Most recent source refresh: Aug 2026. See all data sources →