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Single Family ResidenceResidential
$557,671$370 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 87How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

640 ALPINE DR

RAPID CITY, SD 57702
3
Beds
2
Baths
1,508 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.78 ac
Lot SizeThe size of the land the home sits on, from county records.
2005
Year BuiltThe year the home was originally built, according to county records.

Valuation

$558K
$486K low$629K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,655 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$522,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$66,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$455,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$522,400

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.58 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyPennington
Lot (acres)The size of the land the home sits on, from county records.0.78
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 140 ft²Patio · 510 ft²Porch · 510 ft²

Transaction History(3)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Hill City Elementary - 02A-
Elementary · Grades PK–5 · 7.8 mi
M
Hill City Middle School - 04B
Middle · Grades 6–8 · 7.8 mi
H
Hill City High School - 01A
High · Grades 9–12 · 7.9 mi

District: Hill City School District 51-2

Neighborhood · ZIP 57702These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.86
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.34

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.5%
PopulationHow many people live in this area.42,356
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.141 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$84,353
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$115,376
Average tempThe average temperature here across a full year.43°F
Annual precipHow much rain and melted snow falls here in a typical year.22 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

640 Alpine Dr measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 81% of homes in Pennington County
  • Costs more per square foot than 77% of homes in Pennington County
  • Has a bigger lot than 78% of homes in Pennington County
  • Newer than 88% of homes in Rapid City 57702

What homes are worth in Rapid City 57702

Each bar is how many homes fall in that price range. The marker is this home.

This home
$234K$1.4M

This home is worth more than 66% of homes in Rapid City 57702.

How it measures up in Rapid City 57702

The dot is this home. The mark in the middle is the typical home in Rapid City 57702.

Estimated value$557,671
CheaperTypical $461,764Pricier

Pricier than 66% of homes nearby

Price per ft²$370
CheaperTypical $336Pricier

Pricier than 66% of homes nearby

Living area1,508 ft²
SmallerTypical 1,413 ft²Bigger

Bigger than 56% of homes nearby

Lot size0.78 ac
SmallerTypical 0.33 acBigger

Bigger than 68% of homes nearby

Year built2005
OlderTypical 1978Newer

Newer than 88% of homes nearby

How 640 Alpine Dr ranks against every home in each area.
MeasureThis homeRapid City 57702Pennington County
Estimated valuepricier than$557,67166% of homes81% of homes
Price per ft²pricier than$37066% of homes77% of homes
Living areabigger than1,508 ft²56% of homes62% of homes
Lot sizebigger than0.78 ac68% of homes78% of homes
Year builtnewer than200588% of homes82% of homes

About 640 Alpine Dr

How much is 640 Alpine Dr, Rapid City, SD worth?

The TopHap Estimate for 640 Alpine Dr, Rapid City, SD is $557,671 as of Jul 14, 2026. The likely range is $486,119 to $629,223. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 Alpine Dr, Rapid City, SD last sell?

640 Alpine Dr, Rapid City, SD last sold on Jun 12, 2014, according to the county's recorded deed.

How big is 640 Alpine Dr, Rapid City, SD?

640 Alpine Dr, Rapid City, SD has 3 bedrooms, 2 bathrooms, 1,508 square feet of living space and a 0.78-acre lot.

When was 640 Alpine Dr, Rapid City, SD built?

640 Alpine Dr, Rapid City, SD was built in 2005, making it 21 years old. It is a ranch home.

What schools serve 640 Alpine Dr, Rapid City, SD?

640 Alpine Dr, Rapid City, SD is assigned to Hill City Elementary - 02 (elementary), rated A-; Hill City Middle School - 04 (middle), rated B; Hill City High School - 01 (high), rated A. All sit in Hill City School District 51-2. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 640 Alpine Dr, Rapid City, SD compare to other homes in Rapid City 57702?

Among the 12,949 homes in Rapid City 57702, it is worth more than 66% of them ($557,671 against a typical $461,764), its price per square foot is higher than 66% of them ($370 against a typical $336), it is bigger than 56% of them (1,508 ft² against a typical 1,413 ft²), its lot is bigger than 68% of them (0.78 ac against a typical 0.33 ac) and it is newer than 88% of them (2005 against a typical 1978). Measured against all of Pennington County, it is worth more than 81% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 640 Alpine Dr, Rapid City, SD?

The 2025 property tax bill for 640 Alpine Dr, Rapid City, SD was $5,655. The county assessed it at $522,400.

More homes on Alpine Dr

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Assigned schools

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