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Single Family ResidenceResidential
$170,175$156 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

109 DIAMOND CT

O FALLON, IL 62269
3
Baths
1,092 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
Year BuiltThe year the home was originally built, according to county records.

Valuation

$170K
$157K low$184K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,782 (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.$50,507 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$47,107
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$46,452
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$151,521

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.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
21
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
81
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
66
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.

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
StyleThe architectural style of the home, such as ranch or colonial.Split Level
CountyST. CLAIR
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.2000
Lot (acres)The size of the land the home sits on, from county records.0.11
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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, Attached
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 · 192 ft²Patio · 312 ft²Porch · 120 ft²

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.

E
Shiloh Elementary SchoolA-
Elementary · Grades PK–3 · 0.1 mi
M
Shiloh Middle SchoolA-
Middle · Grades 4–8 · 0.4 mi
H
O'Fallon Township High SchoolB-
High · Grades 9–12 · 2.0 mi

District: Shiloh Village School District 85

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

109 Diamond Ct 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 less than 91% of homes in O Fallon 62269
  • Costs less per square foot than 90% of homes in O Fallon 62269
  • Smaller than 71% of homes in O Fallon 62269
  • Has a smaller lot than 98% of homes in O Fallon 62269
  • Newer than 68% of homes in St. Clair County

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
$124K$730K

This home is worth more than 9% 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$170,175
CheaperTypical $346,596Pricier

Pricier than 9% of homes nearby

Price per ft²$156
CheaperTypical $238Pricier

Pricier than 10% of homes nearby

Living area1,092 ft²
SmallerTypical 1,285 ft²Bigger

Bigger than 29% of homes nearby

Lot size0.11 ac
SmallerTypical 0.28 acBigger

Bigger than 2% of homes nearby

Year built1986
OlderTypical 1993Newer

Newer than 41% of homes nearby

How 109 Diamond Ct ranks against every home in each area.
MeasureThis homeO Fallon 62269St. Clair County
Estimated valuepricier than$170,1759% of homes47% of homes
Price per ft²pricier than$15610% of homes54% of homes
Living areabigger than1,092 ft²29% of homes42% of homes
Lot sizebigger than0.11 ac2% of homes6% of homes
Year builtnewer than198641% of homes68% of homes

About 109 Diamond Ct

How much is 109 Diamond Ct, O Fallon, IL worth?

The TopHap Estimate for 109 Diamond Ct, O Fallon, IL is $170,175 as of Sep 24, 2026. The likely range is $156,796 to $183,554. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 109 Diamond Ct, O Fallon, IL last sell?

109 Diamond Ct, O Fallon, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 109 Diamond Ct, O Fallon, IL?

109 Diamond Ct, O Fallon, IL has 3 bathrooms, 1,092 square feet of living space and a 0.11-acre lot.

When was 109 Diamond Ct, O Fallon, IL built?

109 Diamond Ct, O Fallon, IL was built in 1986, making it 40 years old. It is a split level home.

What schools serve 109 Diamond Ct, O Fallon, IL?

109 Diamond Ct, O Fallon, IL is assigned to Shiloh Elementary School (elementary), rated A-; Shiloh Middle School (middle), rated A-; O'Fallon Township High School (high), rated B-. All sit in Shiloh Village School District 85. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 109 Diamond Ct, O Fallon, IL compare to other homes in O Fallon 62269?

Among the 12,271 homes in O Fallon 62269, it is worth more than 9% of them ($170,175 against a typical $346,596), its price per square foot is higher than 10% of them ($156 against a typical $238), it is bigger than 29% of them (1,092 ft² against a typical 1,285 ft²), its lot is bigger than 2% of them (0.11 ac against a typical 0.28 ac) and it is newer than 41% of them (1986 against a typical 1993). Measured against all of St. Clair County, it is worth more than 47% 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 109 Diamond Ct, O Fallon, IL?

The 2025 property tax bill for 109 Diamond Ct, O Fallon, IL was $1,782. The county assessed it at $50,507.

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