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Single Family ResidenceResidential

809 N UNION AVE

MADISON, SD 57042
4
Beds
11
Baths
1,040 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.
0.35 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,263 (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.$226,300 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$32,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$194,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$226,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$226,300

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.80 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

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
CountyLAKE
Lot (acres)The size of the land the home sits on, from county records.0.35
HeatingThe type of heating system in the home.Heat Pump
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
Madison Elementary - 07A
Elementary · Grades KG–5 · 0.3 mi
H
Madison High School - 01B-
High · Grades 9–12 · 0.8 mi
M
Madison Middle School - 02B+
Middle · Grades 6–8 · 0.9 mi

District: Madison Central School District 39-2

Neighborhood · ZIP 57042These 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.125
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.23

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.84%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
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.7,821
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.40 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,886
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$87,201
Average tempThe average temperature here across a full year.44°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

809 N Union Ave 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.

  • Smaller than 72% of homes in Lake County

How it measures up in Madison 57042

The dot is this home. The mark in the middle is the typical home in Madison 57042.

Living area1,040 ft²
SmallerTypical 1,288 ft²Bigger

Bigger than 30% of homes nearby

Lot size0.35 ac
SmallerTypical 0.29 acBigger

Bigger than 62% of homes nearby

Year built1973
OlderTypical 1963Newer

Newer than 58% of homes nearby

How 809 N Union Ave ranks against every home in each area.
MeasureThis homeMadison 57042Lake County
Living areabigger than1,040 ft²30% of homes28% of homes
Lot sizebigger than0.35 ac62% of homes55% of homes
Year builtnewer than197358% of homes52% of homes

About 809 N Union Ave

When did 809 N Union Ave, Madison, SD last sell?

809 N Union Ave, Madison, SD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 809 N Union Ave, Madison, SD?

809 N Union Ave, Madison, SD has 4 bedrooms, 11 bathrooms, 1,040 square feet of living space and a 0.35-acre lot.

When was 809 N Union Ave, Madison, SD built?

809 N Union Ave, Madison, SD was built in 1973, making it 53 years old. The building has 1 story.

What schools serve 809 N Union Ave, Madison, SD?

809 N Union Ave, Madison, SD is assigned to Madison Elementary - 07 (elementary), rated A; Madison High School - 01 (high), rated B-; Madison Middle School - 02 (middle), rated B+. All sit in Madison Central School District 39-2. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 809 N Union Ave, Madison, SD compare to other homes in Madison 57042?

Among the 3,358 homes in Madison 57042, it is bigger than 30% of them (1,040 ft² against a typical 1,288 ft²), its lot is bigger than 62% of them (0.35 ac against a typical 0.29 ac) and it is newer than 58% of them (1973 against a typical 1963). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 809 N Union Ave, Madison, SD?

The 2026 property tax bill for 809 N Union Ave, Madison, SD was $3,263. The county assessed it at $226,300.

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Assigned schools

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