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Single Family ResidenceResidential
$301,567$185 / 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 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

636 W 21ST ST

SIOUX FALLS, SD 57105
4
Beds
2 / 2
Baths
1,632 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1890
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$302K
$274K low$330K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,167 (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.$232,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$43,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$188,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$219,500

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.Conventional
CountyMINNEHAHA
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1968
Lot (acres)The size of the land the home sits on, from county records.0.20
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 110 ft²Patio · 110 ft²Porch · 196 ft²

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

E
Lowell Elementary SchoolD
Elementary · Grades EE–5 · 0.2 mi
M
Edison Middle SchoolC
Middle · Grades 6–8 · 0.9 mi
H
Roosevelt High SchoolB-
High · Grades 9–12 · 3.9 mi

District: Sioux Falls School District

Neighborhood · ZIP 57105These 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.103
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.22

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.6%
PopulationHow many people live in this area.24,493
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,307 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$78,327
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$99,586
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.25 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

636 W 21st St 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.

  • Costs less per square foot than 90% of homes in Sioux Falls 57105
  • Bigger than 77% of homes in Minnehaha County
  • Among the oldest homes in Sioux Falls 57105

What homes are worth in Sioux Falls 57105

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

This home
$151K$875K

This home is worth more than 57% of homes in Sioux Falls 57105.

How it measures up in Sioux Falls 57105

The dot is this home. The mark in the middle is the typical home in Sioux Falls 57105.

Estimated value$301,567
CheaperTypical $286,555Pricier

Pricier than 57% of homes nearby

Price per ft²$185
CheaperTypical $242Pricier

Pricier than 10% of homes nearby

Living area1,632 ft²
SmallerTypical 1,232 ft²Bigger

Bigger than 75% of homes nearby

Lot size0.2 ac
SmallerTypical 0.18 acBigger

Bigger than 60% of homes nearby

Year built1890
OlderTypical 1954Newer

Older than almost all homes nearby

How 636 W 21st St ranks against every home in each area.
MeasureThis homeSioux Falls 57105Minnehaha County
Estimated valuepricier than$301,56757% of homes44% of homes
Price per ft²pricier than$18510% of homes11% of homes
Living areabigger than1,632 ft²75% of homes77% of homes
Lot sizebigger than0.2 ac60% of homes42% of homes
Year builtnewer than1890almost no homesalmost no homes

About 636 W 21st St

How much is 636 W 21st St, Sioux Falls, SD worth?

The TopHap Estimate for 636 W 21st St, Sioux Falls, SD is $301,567 as of Oct 21, 2026. The likely range is $273,589 to $329,545. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 636 W 21st St, Sioux Falls, SD last sell?

636 W 21st St, Sioux Falls, SD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 636 W 21st St, Sioux Falls, SD?

636 W 21st St, Sioux Falls, SD has 4 bedrooms, 2 bathrooms, 1,632 square feet of living space and a 0.20-acre lot.

When was 636 W 21st St, Sioux Falls, SD built?

636 W 21st St, Sioux Falls, SD was built in 1890, making it 136 years old. It is a conventional home. The building has 2 stories.

What schools serve 636 W 21st St, Sioux Falls, SD?

636 W 21st St, Sioux Falls, SD is assigned to Lowell Elementary School (elementary), rated D; Edison Middle School (middle), rated C; Roosevelt High School (high), rated B-. All sit in Sioux Falls School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 636 W 21st St, Sioux Falls, SD compare to other homes in Sioux Falls 57105?

Among the 8,194 homes in Sioux Falls 57105, it is worth more than 57% of them ($301,567 against a typical $286,555), its price per square foot is higher than 10% of them ($185 against a typical $242), it is bigger than 75% of them (1,632 ft² against a typical 1,232 ft²), its lot is bigger than 60% of them (0.2 ac against a typical 0.18 ac) and it is newer than almost none of them (1890 against a typical 1954). Measured against all of Minnehaha County, it is worth more than 44% 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 636 W 21st St, Sioux Falls, SD?

The 2025 property tax bill for 636 W 21st St, Sioux Falls, SD was $3,167. The county assessed it at $232,200.

More homes on W 21st St

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