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Area data

Keystone, SD — ZIP 57751

Population: 893 (Census ACS)

The typical home value in ZIP 57751 (Keystone, SD) is $531,722 — up 3.6% over the past year. Homes sell for a median $1.20M after a median 73 days on market. FEMA's National Risk Index rates the county's overall natural-hazard risk Relatively Low, with hail, ice storm, lightning the top-rated hazards. Cost of living is 11.4% below the US average (BEA, metro/state-level).

Backed by 25+ public sourcesFEMA · U.S. Census · NOAA · Dept. of Education · EPA · and more

$531,722

Typical home value

+3.6%

1-year change

73

Median days on market

Relatively Low

Hazard risk (county)

Home values & appreciation

Typical home value
$531,722
1-year appreciation
+3.6%
3-year appreciation
+7.3%
5-year appreciation
+34.2%
10-year appreciation
+108.0%
Peak value since 2000 (Mar 2026)
$533,337
House Price Index (state)
503.5 (+1.1% YoY)

Sources: home value index (ZIP-level) · FHFA House Price Index (state-level)

Market activity

Median sale price
$1.20M
Median list price
$440,000
Median price per sqft
$509
1-year sale-price change
+79.7%
Median days on market
73 days
Homes sold (recent period)
1
For-sale inventory
8
Sale-to-list ratio
100.0%
Active listings
7
1-year forecast
+2.1%

Source: recent area sales and market data (ZIP-level)

Rents

Studio fair-market rent
$996/mo
1BR fair-market rent
$1,093/mo
2BR fair-market rent
$1,430/mo
3BR fair-market rent
$1,833/mo
4BR fair-market rent
$2,390/mo

Sources: market rent index (ZIP-level) · HUD Fair Market Rents (metro/county-level, 40th-percentile regulatory reference)

Affordability

Cost of living index (Low)
88.6 (100 = US avg)
Electricity rate (state-level)
13.4¢/kWh
Natural gas rate (state-level)
$9.90/MCF
30-year mortgage rate (national)
7.40%
15-year mortgage rate (national)
6.73%

Sources: BEA Regional Price Parities (metro/state-level) · EIA energy rates (state-level) · Freddie Mac PMMS (national)

Natural hazards & flood risk

Overall hazard risk (county)
Relatively Low
Top hazards (county)
hail, ice storm, lightning, winter weather, cold wave
Notable hazard ratings (county)
hail: Relatively High · ice storm: Relatively High · lightning: Relatively High · winter weather: Relatively High · cold wave: Relatively Moderate · wildfire: Relatively Moderate
Most common flood zone among NFIP claims
Zone B
NFIP flood claims on record
4
Wildfire risk to homes (county)
Higher than 84% of US counties
Buildings in wildfire direct-exposure zone
39.9%
Radon potential (county)
Moderate radon potential — EPA Zone 2 of 3
EPA Superfund (NPL) sites within 5 mi
None
Flood zones vary by property. Look up a specific address on the FEMA Flood Map Service Center.
EPA recommends radon testing for every home regardless of zone.

Sources: FEMA National Risk Index (county-level) · FEMA NFIP flood-insurance claims (ZIP-level) · USDA Forest Service Wildfire Risk to Communities (county-level) · EPA radon zones + Superfund NPL

Climate (30-year normals)

Average annual temperature
46.0°F
Average high
55.0°F
Average low
37.0°F
Annual precipitation
24.1 in
Annual snowfall
59.3 in
USDA plant hardiness zone
5a (extreme annual low -20 to -15°F)

Sources: NOAA Climate Normals (30-year, nearest-station) · USDA Plant Hardiness Zone Map (2023)

Air quality

Air quality rating
Good
Median AQI (annual)
32
Days with Good air quality
282
Days with Moderate air quality
81
Highest AQI recorded (year)
107

Source: EPA annual air quality index (county-level)

Walkability & transit

Walkability index
6.7 / 20
Transit service frequency
-99,999
Jobs reachable by car (30 min)
2,656
Jobs reachable by transit (45 min)
62

Source: EPA Smart Location Database (metropolitan block groups)

Amenities

National parks within ~60 mi
4
Nearest national park
Mount Rushmore National Memorial (0 mi)
National parks include
Mount Rushmore National Memorial, Wind Cave National Park, Jewel Cave National Monument
Airports within 30 mi
7
Nearest airport
Custer State Park Airport (12 mi)
Nearest major airport
Rapid City Regional Airport (RAP) (23 mi)
Hospitals in or near this ZIP
9
Hospitals include
VA BLACK HILLS HEALTHCARE SYSTEM, MONUMENT HEALTH SPEARFISH HOSPITAL, MONUMENT HEALTH RAPID CITY HOSPITAL
Avg hospital rating (CMS)
4.0 / 5
Best hospital rating nearby (CMS)
5.0 / 5
Solar radiation rating
Fair (4.3 kWh/m²/day)

Sources: National Park Service · FAA airport data · CMS hospital data (same ZIP, else within ~40 mi) · DOE/NREL (proximity-based)

Migration

Net migration (county)
+1,063 tax filers

Source: IRS SOI county-to-county migration (county-level; published with a multi-year lag)

Housing stock

Median year housing built
1991
Housing built before 1970
11.9%
Housing built 2000 or later
35.2%
Median annual property tax
$4,181
Households with broadband internet
66.7%

Source: Census ACS 5-year estimates (ZIP-level)

Employment & development

Total county employment
54,817
Average weekly wage
$1,143
Top industries (by employment)
Health Care, Accommodation & Food, Construction
Annual residential building permits (county)
563

Sources: BLS QCEW (county-level) · Census Building Permits (county-level)

How it compares

ZIP 57751State medianUS median
Typical home value$531,722$302,982$288,527
Median sale price$1.20M$287,750$325,000
Median days on market73 days58 days51 days
Median annual property tax$4,181$1,656$2,006

State and US medians are computed across all US ZIP codes with sufficient public-data coverage, from the same sources as the figures above.

Area data compiled from public government, academic, and industry research feeds. Data sources →

Common questions

What is the typical home value in ZIP 57751?
$531,722.
What is the median sale price in ZIP 57751?
$1.20M.
How long do homes take to sell in ZIP 57751?
Median days on market: 73 days.
What is typical rent in ZIP 57751?
2-bedroom fair-market rent: $1,430/month (HUD FMR — a 40th-percentile regulatory reference, not market-observed).
What is the natural-hazard risk in ZIP 57751?
Overall risk: Relatively Low (FEMA NRI, county-level). Top hazards: hail, ice storm, lightning, winter weather, cold wave.
Is ZIP 57751 in a flood zone?
Flood zones vary by property within ZIP 57751. 4 FEMA flood-insurance (NFIP) claims are on record; the most common zone among them is B. Check a specific address on the FEMA Flood Map Service Center.
What is the wildfire risk in ZIP 57751?
Risk to homes is higher than 84% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
What is the radon potential in ZIP 57751?
Moderate radon potential — EPA Zone 2 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near ZIP 57751?
No current or proposed National Priorities List sites within 5 miles (EPA).
Is ZIP 57751 walkable?
Walkability index: 6.7/20 (EPA Smart Location Database).
What is the air quality in ZIP 57751?
Good. Median AQI: 32. (EPA AQI).
What is the cost of living in ZIP 57751?
Regional Price Parity: 88.6 (100 = US average) (Low) (BEA RPP, metro/state-level).

Nearby ZIP codes

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Data last updated

Most recent source refresh: Oct 2026. See all data sources →

Data compiled by REAIGENT7 — AI listing platform for real estate agents