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Single Family ResidenceResidential
$319,659$142 / 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 Aug 30, 2026

640 MAIN ST

ALEXANDRIA, SD 57311
0
Baths
2,257 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.
1900
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$320K
$279K low$360K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$407 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$246,273 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$13,313
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$232,960
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$13,215
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$7,358

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.8 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
CountyHANSON
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)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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.

M
Hanson Middle School - 02A+
Middle · Grades 6–8 · 0.1 mi
H
Hanson High School - 01B
High · Grades 9–12 · 0.1 mi
E
Hanson Elementary - 06B
Elementary · Grades PK–5 · 0.1 mi

District: Hanson School District 30-1

Neighborhood · ZIP 57311These 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.114
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.33

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.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.1,640
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.9 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$85,653
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$99,551
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.23 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 Main 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.

  • Worth more than 65% of homes in Hanson County
  • Costs less per square foot than 79% of homes in Alexandria 57311
  • Bigger than 85% of homes in Alexandria 57311
  • Has a smaller lot than 88% of homes in Alexandria 57311
  • Older than 88% of homes in Hanson County

What homes are worth in Alexandria 57311

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

This home
$141K$599K

This home is worth more than 64% of homes in Alexandria 57311.

How it measures up in Alexandria 57311

The dot is this home. The mark in the middle is the typical home in Alexandria 57311.

Estimated value$319,659
CheaperTypical $280,087Pricier

Pricier than 64% of homes nearby

Price per ft²$142
CheaperTypical $169Pricier

Pricier than 21% of homes nearby

Living area2,257 ft²
SmallerTypical 1,606 ft²Bigger

Bigger than 85% of homes nearby

Lot size0.2 ac
SmallerTypical 1.1 acBigger

Bigger than 12% of homes nearby

Year built1900
OlderTypical 1967Newer

Newer than 13% of homes nearby

How 640 Main St ranks against every home in each area.
MeasureThis homeAlexandria 57311Hanson County
Estimated valuepricier than$319,65964% of homes65% of homes
Price per ft²pricier than$14221% of homes30% of homes
Living areabigger than2,257 ft²85% of homes83% of homes
Lot sizebigger than0.2 ac12% of homes12% of homes
Year builtnewer than190013% of homes12% of homes

About 640 Main St

How much is 640 Main St, Alexandria, SD worth?

The TopHap Estimate for 640 Main St, Alexandria, SD is $319,659 as of Aug 30, 2026. The likely range is $279,409 to $359,909. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 Main St, Alexandria, SD last sell?

640 Main St, Alexandria, SD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 640 Main St, Alexandria, SD?

640 Main St, Alexandria, SD has 2,257 square feet of living space and a 0.20-acre lot.

When was 640 Main St, Alexandria, SD built?

640 Main St, Alexandria, SD was built in 1900, making it 126 years old. The building has 2 stories.

What schools serve 640 Main St, Alexandria, SD?

640 Main St, Alexandria, SD is assigned to Hanson Middle School - 02 (middle), rated A+; Hanson High School - 01 (high), rated B; Hanson Elementary - 06 (elementary), rated B. All sit in Hanson School District 30-1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 640 Main St, Alexandria, SD compare to other homes in Alexandria 57311?

Among the 446 homes in Alexandria 57311, it is worth more than 64% of them ($319,659 against a typical $280,087), its price per square foot is higher than 21% of them ($142 against a typical $169), it is bigger than 85% of them (2,257 ft² against a typical 1,606 ft²), its lot is bigger than 12% of them (0.2 ac against a typical 1.1 ac) and it is newer than 13% of them (1900 against a typical 1967). Measured against all of Hanson County, it is worth more than 65% 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 Main St, Alexandria, SD?

The 2026 property tax bill for 640 Main St, Alexandria, SD was $407. The county assessed it at $246,273.

More homes on Main St

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Assigned schools

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