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Single Family ResidenceResidential
$507,786
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 86How 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
Last sold for $500,401 on Sep 9, 2019

520 ALDER RIDGE DR

O FALLON, IL 62269
0
Baths
1.41 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$508K
$436K low$580K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$500,401 · Sep 9, 2019

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$192,939 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$52,555
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$140,384
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$170,713
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$578,817

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.42
12
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
24
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
82
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
69
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
24
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.2 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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
CountySt. Clair
Lot (acres)The size of the land the home sits on, from county records.1.41
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

M
Fulton Junior High SchoolA-
Middle · Grades 6–8 · 0.7 mi
E
Hinchcliffe Elementary SchoolB
Elementary · Grades EE–5 · 1.7 mi
H
O'Fallon Township High SchoolB-
High · Grades 9–12 · 3.0 mi

District: O'Fallon Community Consolidated School District 90

Neighborhood · ZIP 62269These 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.66
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 100.163

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.95%
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.3.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.33,610
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,140 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,165
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$121,936
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.40 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

520 Alder Ridge 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 96% of homes in St. Clair County
  • Has a bigger lot than 94% of homes in O Fallon 62269

What homes are worth in O Fallon 62269

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

This home
$123K$706K

This home is worth more than 89% of homes in O Fallon 62269.

How it measures up in O Fallon 62269

The dot is this home. The mark in the middle is the typical home in O Fallon 62269.

Estimated value$507,786
CheaperTypical $341,767Pricier

Pricier than 89% of homes nearby

Lot size1.41 ac
SmallerTypical 0.28 acBigger

Bigger than 94% of homes nearby

How 520 Alder Ridge Dr ranks against every home in each area.
MeasureThis homeO Fallon 62269St. Clair County
Estimated valuepricier than$507,78689% of homes96% of homes
Lot sizebigger than1.41 ac94% of homes91% of homes

About 520 Alder Ridge Dr

How much is 520 Alder Ridge Dr, O Fallon, IL worth?

The TopHap Estimate for 520 Alder Ridge Dr, O Fallon, IL is $507,786 as of Jul 14, 2026. The likely range is $435,665 to $579,907. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 520 Alder Ridge Dr, O Fallon, IL last sell?

520 Alder Ridge Dr, O Fallon, IL last sold on Sep 9, 2019 for $500,401, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

What schools serve 520 Alder Ridge Dr, O Fallon, IL?

520 Alder Ridge Dr, O Fallon, IL is assigned to Fulton Junior High School (middle), rated A-; Hinchcliffe Elementary School (elementary), rated B; O'Fallon Township High School (high), rated B-. All sit in O'Fallon Community Consolidated School District 90. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 520 Alder Ridge Dr, O Fallon, IL compare to other homes in O Fallon 62269?

Among the 12,187 homes in O Fallon 62269, it is worth more than 89% of them ($507,786 against a typical $341,767) and its lot is bigger than 94% of them (1.41 ac against a typical 0.28 ac). Measured against all of St. Clair County, it is worth more than 96% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on Alder Ridge Dr

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Assigned schools

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