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Residential - Vacant LandResidential
Last sold for $116,000 on Dec 18, 2025

400 PROSPECT ST

ALTON, IL 62002
0
Baths
1.43 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$116,000 · Dec 18, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,143 (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.$39,260 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$39,260
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$35,510
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$117,780

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.37
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
29
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
83
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
70
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
4
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential - Vacant Land
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyMADISON
Lot (acres)The size of the land the home sits on, from county records.1.43
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(22)

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
Alton Middle SchoolD
Middle · Grades 6–8 · 2.0 mi
E
Gilson Brown Elementary School
Elementary · Grades KG–1 · 3.0 mi
H
Alton High SchoolD+
High · Grades 9–12 · 3.4 mi

District: Alton Community Unit School District 11

Neighborhood · ZIP 62002These 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.135
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.125

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.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.19%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.28,813
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.738 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$61,207
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$78,082
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.39 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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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

400 Prospect 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.

  • Has a bigger lot than 93% of homes in Alton 62002

How it measures up in Alton 62002

The dot is this home. The mark in the middle is the typical home in Alton 62002.

Lot size1.43 ac
SmallerTypical 0.19 acBigger

Bigger than 93% of homes nearby

How 400 Prospect St ranks against every home in each area.
MeasureThis homeAlton 62002Madison County
Lot sizebigger than1.43 ac93% of homes88% of homes

About 400 Prospect St

When did 400 Prospect St, Alton, IL last sell?

400 Prospect St, Alton, IL last sold on Dec 18, 2025 for $116,000, according to the county's recorded deed. TopHap holds 12 recorded sales for this parcel.

What schools serve 400 Prospect St, Alton, IL?

400 Prospect St, Alton, IL is assigned to Alton Middle School (middle), rated D; Gilson Brown Elementary School (elementary); Alton High School (high), rated D+. All sit in Alton Community Unit School District 11. Attendance boundaries change — confirm with the district before relying on an assignment.

What are the property taxes on 400 Prospect St, Alton, IL?

The 2025 property tax bill for 400 Prospect St, Alton, IL was $3,143. The county assessed it at $39,260.

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